Log InRegister
Search For:
Mineral Name:
Locality Name:
Keyword(s):
 
Home PageAbout MindatThe Mindat ManualHistory of MindatCopyright StatusWho We AreOur ScienceMindat Newsletter [Free Download]Contact Us
Donate to MindatSponsor a PageCorporate SponsorshipSponsored Pages
Learning CenterWhat Is a Mineral?The Most Common Minerals on EarthInformation for EducatorsMindat ArticlesMindat Newsletter [Free Download]The ElementsThe Mineral Quiz
Minerals by PropertiesMinerals by ChemistryMineral Visual ExplorerAdvanced Locality SearchRandom MineralRandom LocalitySearch by minIDMinerals by CountryAlphabetical Mineral IndexAlphabetical Locality SearchMineral Association SearchList of CountriesLocalities Near MePhoto SearchSearch ArticlesSearch GlossaryThe Rock H. Currier Digital LibraryMore Search Options
The Mindat ManualAdd a New PhotoRate PhotosLocality Edit ReportCoordinate Completion ReportAdd Glossary Item
MineralsPetrologyFossilsMeteoritesGeologic Time
Mining CompaniesStatisticsMineral MuseumsClubs & OrganizationsMineral Shows & EventsDevice SettingsTime Machine
Read DiscussionsIdentification Request
Photo SearchPhoto GalleriesSearch by ColourPhoto Colour ExplorerNew Photos TodayNew Photos YesterdayMembers' Photo GalleriesPast Photo of the Day GalleryPhotography

Murray Basin, Australiai
Regional Level Types
Murray BasinBasin
AustraliaCountry

This page is currently not sponsored. Click here to sponsor this page.
PhotosSearch
Type:
Largest Settlements:
PlacePopulation
Shepparton38,773 (2017)
Mildura30,016 (2013)
Murray Bridge19,577 (2013)
Echuca19,457 (2013)
Wangaratta16,845 (2013)
Horsham14,285 (2013)
Mindat Locality ID:
306204
Long-form identifier:
mindat:1:2:306204:6
GUID (UUID V4):
0


No description has been added for this locality. Can you add one?

Select Mineral List Type

Standard Detailed Gallery Strunz Chemical Elements

Commodity List

This is a list of exploitable or exploited mineral commodities recorded from this region.


Mineral List

Mineral list contains entries from the region specified including sub-localities

163 valid minerals. 9 (TL) - type locality of valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Rock list contains entries from the region specified including sub-localities

Select Rock List Type

Alphabetical List Tree Diagram

Detailed Mineral List:

β“˜ Aegirine
Formula: NaFe3+Si2O6
β“˜ Aikinite
Formula: PbCuBiS3
β“˜ Albite
Formula: Na(AlSi3O8)
Description: "Albite, previously recorded as oligoclase, forms white to translucent wedge-shaped crystals up to 2.5 cm long in cavities with quartz and orthoclase."
β“˜ Alunogen
Formula: Al2(SO4)3 · 17H2O
β“˜ Analcime
Formula: Na(AlSi2O6) · H2O
Description: "In a pegmatoidal phase of the leucetite at the Cosgrove quarry analcime has been identified forming subhedral, turbid crystals possibly replacing primary leucite. Analcime also forms white, opaque prisms about 1.5mm long replacing nepheline in vesicles in the leucetite."
β“˜ Anatase
Formula: TiO2
Description: "Bipyramidal bluish black crystals of anatase up to 1 mm long have been found in cavities in the Lake Boga granite. They may be associated with kidwellite."
β“˜ Andalusite
Formula: Al2(SiO4)O
β“˜ Anorthite
Formula: Ca(Al2Si2O8)
β“˜ Antigorite
Formula: Mg3(Si2O5)(OH)4
β“˜ 'Apatite'
Formula: Ca5(PO4)3(Cl/F/OH)
β“˜ Aragonite
Formula: CaCO3
β“˜ Atacamite
Formula: Cu2(OH)3Cl
β“˜ Augite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ Augite var. Fassaite
Formula: (Ca,Na)(Mg,Fe2+,Al,Fe3+,Ti)[(Si,Al)2O6]
β“˜ Autunite
Formula: Ca(UO2)2(PO4)2 · 10-12H2O
Description: Small flakes of autunite were originally recorded from Wycherproof in 1976. Ten years later it had been found as pale to bright yellow platy crystals up to 2mm on edge in a pegmatite matrix. Some of the more translucent crystals may be meta-autunite, and it is also difficult to distinguish between autunite and saleeite at this locality without chemical tests.
β“˜ Azurite
Formula: Cu3(CO3)2(OH)2
Description: "Powdery coatings, fibrous tuffs and thin films of malachite and azurite have been found on joints in the granite."
β“˜ Baryte
Formula: BaSO4
β“˜ Beryl
Formula: Be3Al2(Si6O18)
Description: "Several colourless prismatic crystals of beryl up to 1.5 cm long have been found in one clay-filled cavity in the Lake Boga granite."
β“˜ 'Biotite'
Formula: K(Fe2+/Mg)2(Al/Fe3+/Mg/Ti)([Si/Al/Fe]2Si2O10)(OH/F)2
β“˜ Bismoclite
Formula: BiOCl
β“˜ Bleasdaleite (TL)
Formula: (Ca,Fe3+)2Cu5(Bi,Cu)(PO4)4(H2O,OH,Cl)13
Type Locality:
Description: "In April 1995 a boulder was broken open of pegmatite in the quarry, exposing copper mineralisation consisting of massive supergene chalcocite partially altered to a suite of secondary copper and silver minerals, including one containing Ca,Cu,Bi,P and Cl. (Bleasdaleite). The chalcocite in the bleasdaleite-bearing boulder forms massive patches up to about 5 cm across, occupying space between large orthoclase crystals. The rock around these patches is stained green, possibly due to malachite. Thin sections show that much of the chalcocite has been corroded and altered to veinlets of covellite. Secondary minerals have precipitated on the corroded surface of the chalcocite-covelliet. Pseudomalachite and chalcosiderite/turquoise form globules and crusts, while rare ulrichit, libethenite, torbernite and iodargyrite are present as scattered crystals with dimensions less than 1 mm. Bleasdaleite itself occurs as thin, dark brown scaly crusts and hemispherical clusters up to about 0.1 mm across. Scanning electron microscopy reveals delicate tabular crystals forming open rosette-like clusters and linings. The crystals reach up to about 20 micron across but are less than 1 micron thick. The lustre on broken surfaces is resinous, streak pale brown. Thin sections show bleasdaleite crystals are transparent and also reveal a well developed (001) cleavage."
β“˜ Bornite
Formula: Cu5FeS4
β“˜ Cacoxenite
Formula: Fe3+24AlO6(PO4)17(OH)12 · 75H2O
β“˜ Calcite
Formula: CaCO3
Localities: Reported from at least 7 localities in this region.
β“˜ 'Calcium Amphibole Subgroup'
Formula: AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
β“˜ 'Calcium Amphibole Subgroup var. Hornblende'
Formula: AnCa2(Z2+5-mZ3+m)(Si8-(n+m)Al(n+m))(OH,F,Cl)2
β“˜ Cassiterite
Formula: SnO2
β“˜ Celestine
Formula: SrSO4
β“˜ Chalcanthite
Formula: CuSO4 · 5H2O
β“˜ Chalcocite
Formula: Cu2S
Description: "The chalcocite in the bleasdaleite-bearing boulder forms massive patches up to about 5 cm across, occupying space between large orthoclase crystals. The rock around these patches is stained green, possibly due to malachite. Thin sections show that much of the chalcocite has been corroded and altered to veinlets of covellite. Secondary minerals have precipitated on the corroded surface of the chalcocite-covellite."
β“˜ Chalcopyrite
Formula: CuFeS2
Description: "Small grains of chalcopyrite are relatively common throughout the granite. In one cavity a crystal measuring 1.2 cm and coated with sooty blue chalcocite or covellite was collected. Grains of chalcopyrite or covellite was collected. Grains of chalcopyrite in the granite are often ringed with yellowish alteration halos, and on some surfaces thin stains of azurite and malachite occur. The chalcopyrite is the most probable source for copper in the later-formed phosphates and uranyl-phosphates. Brownish masses consisting of a mixture of iron oxides and chalcocite replacing chalcopyrite occur in some veins and cavities."
β“˜ Chalcosiderite
Formula: CuFe3+6(PO4)4(OH)8 · 4H2O
Description: "Pale blue, pale green or bluish green globular crusts and individual spheres or hemispheres of minerals in the composition series between turquoise and chalcosiderite are widespread in the Lake Boga granite quarry. They occur most often lining small miarolitic cavities but may also be found on joint planes and in cavities etched in fluorapatite. Individual globules may reach close to 1 mm across. Well formed crystals have not been observed. Massive partial replacements of orthoclase crystals by turquoise have been collected, but are very rare. As an early-formed secondary hydrothermal mineral, turquoise/chalcosiderite is found with most of the other secondary phosphates from Lake Boga. Microprobe analyses of the bluish green crusts show the compositions fall between ferrian turquoise and aluminan chalcosiderite."
β“˜ Cheralite
Formula: CaTh(PO4)2
β“˜ Chlorapatite
Formula: Ca5(PO4)3Cl
β“˜ Chlorargyrite
Formula: AgCl
Description: "Highly lustrous single crystals of brownish green chlorargyrite less than 0.5 mm across occur very rarely in cavities in the granite. They may be found with orange-brown clay, turquoise/chalcosiderite and, more rarely, with torbernite. The source of the silver in the granite is unknown."
β“˜ 'Chlorite Group'
β“˜ Chromite
Formula: Fe2+Cr3+2O4
β“˜ Chrysocolla
Formula: Cu2-xAlx(H2-xSi2O5)(OH)4 · nH2O, x < 1
β“˜ 'Clay minerals'
References:
https://www.mindat.org/locentry-11351.htmlIdentification: Visual Identification
β“˜ Clinoenstatite
Formula: MgSiO3
β“˜ 'Clinopyroxene Subgroup'
Description: Clinopyroxene β€” The dominant pyroxene is Ca-poor and frequently twinned clinopyroxene (Fs~20) [labelled 'clinohypersthene' by Mason & Wiik].
β“˜ Connellite
Formula: Cu19(SO4)(OH)32Cl4 · 3H2O
β“˜ Corundum
Formula: Al2O3
β“˜ Corundum var. Sapphire
Formula: Al2O3
β“˜ Covellite
Formula: CuS
Description: "The chalcocite in the bleasdaleite-bearing boulder forms massive patches up to about 5 cm across, occupying space between large orthoclase crystals. The rock around these patches is stained green, possibly due to malachite. Thin sections show that much of the chalcocite has been corroded and altered to veinlets of covellite. Secondary minerals have precipitated on the corroded surface of the chalcocite-covellite."
β“˜ Crandallite
Formula: CaAl3(PO4)(PO3OH)(OH)6
Description: "Crandalite occurs rarely as glistening white hemispheres up to 0.3 mm across in miarolitic cavities. As well, pale blue crandallite with a pearly lustre forms rare cavity infillings and prismatic radiating crystal sprays a few mm across, possibly pseudomorphs after wavellite. Microprobe analysis show this pale blue variety has a composition between crandallite and goyazite and contains a small amount of copper. It is best refered to as cuprian strontian crandallite."
β“˜ Cronstedtite
Formula: Fe2+2Fe3+((Si,Fe3+)2O5)(OH)4
β“˜ Cuprite
Formula: Cu2O
β“˜ Cyrilovite
Formula: NaFe3+3(PO4)2(OH)4 · 2H2O
Description: "Cyrilovite forms bright sparkling yellow drusy crusts and dull brownish yellow globules in miarolitic cavities in the Lake Boga granite. The crusts are made up of transparent golden yellow crystals up to 0.05 mm across."
β“˜ DaubrΓ©elite
Formula: Fe2+Cr3+2S4
β“˜ Diamond
Formula: C
β“˜ Digenite
Formula: Cu9S5
β“˜ Diopside
Formula: CaMgSi2O6
β“˜ Djurleite
Formula: Cu31S16
β“˜ Dolomite
Formula: CaMg(CO3)2
Localities: Reported from at least 6 localities in this region.
β“˜ Enstatite
Formula: Mg2Si2O6
β“˜ Eosphorite
Formula: Mn2+Al(PO4)(OH)2 · H2O
Description: "Attractive honey-brown to pinkish brown, tapering prismatic crystals of eosphorite occur in cavities in the Wycherproof pegmatite veins. Drusy crusts of eosphorite crystals up to 0.2mm have been found in a vertical seam in the adjacent granite. In the pegmatites, the larger crystals often form sheaf-like aggregates, with individual crystals up to 1cm long. The eosphorite crystals often appear dull due to a thin coating of cyrilovite."
β“˜ Epidote
Formula: (CaCa)(AlAlFe3+)O[Si2O7][SiO4](OH)
β“˜ Epsomite
Formula: MgSO4 · 7H2O
β“˜ Eskolaite
Formula: Cr2O3
β“˜ 'Fayalite-Forsterite Series'
β“˜ Ferberite
Formula: FeWO4
Description: "Small clusters of black tabular crystals of ferberite up to 2 mm across occur in miarolitic cavities in the Lake Boga granite." Ferberite has also been found in crystalline masses up to 5 cm across embedded in granite.
β“˜ Fluorapatite
Formula: Ca5(PO4)3F
β“˜ Fluorapatite var. Carbonate-rich Fluorapatite
Formula: Ca5(PO4,CO3)3(F,O)
Description: "Attractive well-formed fluorapatite crystals are found in miarolitic cavities, particularly in the upper levels of the quarry. In general, crystals have simple hexagonal to near circular outlines, and range from tabular to blocky and, less often to prismatic. Complex terminations are absent, and crystals usually have a flat lustrous pinacoids face, often showing growth outlines. Some crystals show weakly developed low angle pyramidal faces. The prism faces are almost always striated. The largest crystal collected include tabular varieties 4.5 cm across and 1 cm thick, and prisms 2.5 cm long and 1.2 cm across. Colour in the larger crystals generally ranges from shades of dull greyish to bluish green and deep opaque blue. Most crystals show colour zoning involving these shades, as well as near colourless and pale purple zones. The most common scheme is for pale blue translucent crystals to have dark blue bands at the upper and lower pinacoids. Sparklings of smaller crystals from opaque cream or grey to colourless or transparent blue or mauve are also found. Apatite has also been found rarely at Lake Boga as lustrous, fibrous globular dark green linings to cavities."
β“˜ Fluorite
Formula: CaF2
Description: "Thin seams of purple fluorite have been found on joint planes in the granite."
β“˜ Fluor-schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3F
Description: Fluor-schorl is the dominant tourmaline at Lake Boga occurring as black interlocking crystals masses up to 15 cm across in the granite, also as single black crystals up to 5 cm long in miarolitic cavities (pers. com. S.Mills)
β“˜ Forsterite
Formula: Mg2SiO4
β“˜ 'Garnet Group'
Formula: X3Z2(SiO4)3
β“˜ Geerite
Formula: Cu8S5
β“˜ 'Glass'
β“˜ Glauberite
Formula: Na2Ca(SO4)2
β“˜ Goethite
Formula: Fe3+O(OH)
β“˜ Graphite
Formula: C
β“˜ Greenalite
Formula: (Fe2+,Fe3+)2-3Si2O5(OH)4
β“˜ Grossite
Formula: CaAl4O7
β“˜ Gypsum
Formula: CaSO4 · 2H2O
Localities: Reported from at least 28 localities in this region.
Habit: Combination of l {111} and e {103} faces. Rounded appearance.
Colour: Reddish
β“˜ Gypsum var. Selenite
Formula: CaSO4 · 2H2O
β“˜ Halite
Formula: NaCl
β“˜ Halotrichite
Formula: FeAl2(SO4)4 · 22H2O
β“˜ Hematite
Formula: Fe2O3
β“˜ Hexahydrite
Formula: MgSO4 · 6H2O
β“˜ Hexamolybdenum
Formula: (Mo,Ru,Fe,Ir,Os)
β“˜ Hibonite
Formula: CaAl12O19
β“˜ Hydromagnesite
Formula: Mg5(CO3)4(OH)2 · 4H2O
β“˜ 'Hypersthene'
Formula: (Mg,Fe)SiO3
β“˜ Ilmenite
Formula: Fe2+TiO3
Localities: Reported from at least 6 localities in this region.
β“˜ Iodargyrite
Formula: AgI
Description: "A pegmatite boulder containing patches of massive chalcocite up to 4 cm across was found in April 1995. The chalcocite occupies cavities between large orthoclase crystals. Alteration of the chalcocite has produced a suite of secondary copper phosphate minerals in small cavities. In some cavities are colourless, waxy, platy to tabular crystals, up to about 1.0 mm across, which have been identified as a polymorph of silver iodide, probably iodargyrite."
β“˜ Isocubanite
Formula: CuFe2S3
β“˜ Kaolinite
Formula: Al2(Si2O5)(OH)4
β“˜ 'K Feldspar'
β“˜ Kidwellite
Formula: NaFe3+9+x(PO4)6(OH)11 · 3H2O, x = 0.33
Description: "At Lake Boga, cream to pale yellow spherical clusters up to 0.3 mm across of delicate platy crystals of kidwellite have been found in miarolitic cavities. On a few specimens the mineral forms a continuous furry coating on the cavity walls. When broken, the spheres have a fibrous silky appearance in contrast to the waxy, globular, cream or pale yellow clay mineral which may be associated. Kidwellite occurs with cyrilovite, turquoise/chalcosiderite, torbernite or saleeite."
β“˜ Kosnarite
Formula: KZr2(PO4)3
Description: "Rhombohedral, vitreous, grey blue crystals up to 0.5mm acros occurring with eosphorite and cyrilovite in a 1cm wide miarolic cavity have been identified as kosnarite."
β“˜ Kunatite (TL)
Formula: CuFe3+2(PO4)2(OH)2 · 4H2O
Type Locality:
Description: "Kunatite was first found about 1990, and occurs on only 7 or 8 small pieces of granite matrix, which may have been the contents of a single miarolitic cavity. kunatite from Lake Boga occurs as acicular to lath-like microcrystals that are rapidially intergrown to form compactto slightly open spheres, hemispheres and flattened sprays up to about 0.25mm across. Individual fibrous crystals are up to 30 micron long and 5 micron thick. The only supergene mineral associated with kunatite is chalcosiderite/turquoise. Thin blades of manganoan ferberite occur on several of the specimens, but this is regarded as an accidental association. The matrix minerals are smoky quartz, white albite, cream orthoclase and muscovite."
β“˜ Lakebogaite (TL)
Formula: CaNaFe3+2H(UO2)2(PO4)4(OH)2 · 8H2O
Type Locality:
Description: "Lakebogaite occurs as bright lemon-yellow transparent prismatic crystals up to 0.4 mm across. The crystals have a vitreous luster and a pale yellow streak. It is associated with meurigite-Na, torbernite and saleeite on a matrix of microcline, albite, smoky quarz, and muscovite."
β“˜ Lawrencite
Formula: (Fe2+,Ni)Cl2
Description: After some initial missteps, acetone washing was used to quell further deterioration.
β“˜ Lazulite
Formula: MgAl2(PO4)2(OH)2
Colour: Blue
Description: Blue crystals in pegmatitic granite. Ex Ruth Coulsell Collection.
β“˜ Leucite
Formula: K(AlSi2O6)
β“˜ Leucophosphite
Formula: KFe3+2(PO4)2(OH) · 2H2O
Description: "Leucophosphite from Lake Boga forms hemispherical clusters up to 1 mm across consisting of translucent, pale pink to brownish pink, tabular crystals which appear slightly twisted. They occur with globular cyrilovite, kidwellite and a pale yellow clay mineral in miarolitic cavities."
β“˜ 'Leucoxene'
β“˜ Libethenite
Formula: Cu2(PO4)(OH)
Description: "Crusts and hemispherical tufts and sprays of transparent dark green to olive green libethenite crystals occur in miarolitic cavities in the Lake Boga granite. Crystals are prismatic and up to 2.5 mm long, ranging from finely fibrous needles to more stubby individuals which are well-terminated. Small cavities may be completely lined with inwardly pointing libethenite crystals. The minerals most frequently associated with libethenite are turquoise/chalcosiderite, ulrichite, pseudomalachite and sampleite."
β“˜ 'Limonite'
β“˜ Machiite (TL)
Formula: Al2Ti3O9
Type Locality:
β“˜ Mackinawite
Formula: FeS
β“˜ Magnesite
Formula: MgCO3
β“˜ Magnetite
Formula: Fe2+Fe3+2O4
Localities: Reported from at least 6 localities in this region.
β“˜ Magnetite var. Titanium-bearing Magnetite
Formula: Fe2+(Fe3+,Ti)2O4
β“˜ Malachite
Formula: Cu2(CO3)(OH)2
Description: "Powdery coatings, fibrous tuffs and thin films of malachite and azurite have been found on joints in the granite."
β“˜ 'Melilite Group'
Formula: Ca2M(XSiO7)
β“˜ Merrillite
Formula: Ca9NaMg(PO4)7
β“˜ Meta-autunite
Formula: Ca(UO2)2(PO4)2 · 6H2O
βœͺ Metanatroautunite
Formula: Na(UO2)(PO4)(H2O)3
Habit: As clusters to 4 mm.
Colour: lemon yellow
Description: "The metanatroautunite forms crystals and clusters up to 4 mm across on limonite-coated joint planes and in miarolitic cavities. Crystals may appear to be aggregates of intergrown plates with slightly rounded edges. In some crystals with more blocky habits, these plates may be separated. The upper surface of these crystals tend to be slightly concave and crinkled partly due to dehydration. Rare intergrowths with saleeite or torbernite occur. Metanatroautunite is initially difficult to distinguish from saleeite at Lake Boga. However, metanatroautunite tends to be translucent with a pearly or slightly greasy lustre, and be bright lemon yellow. This colour may be slightly more intense on the edge than on the upper face. Saleeite at Lake Boga is generally transparent and more golden yellow."
β“˜ Metatorbernite
Formula: Cu(UO2)2(PO4)2 · 8H2O
Description: "A few opaque dull-green microcrystals of metatorbernite have been found in small etch cavities."
β“˜ Meurigite-K
Formula: KFe3+8(PO4)6(OH)7 · 6.5H2O
Description: Originally thought to be a mineral resembling potassian kidwellite (Birch 1994) has now been confirmed as meurigite-K. "At Wycheproof, meurigite occurs as yellow spheres and hemispheres up to about 0.2 mm across, with a silky white to cream fibrous internal structure. It is accompanied by rockbridgeite, cyrilovite and leucophosphite in small etch cavities in the granite pegmatite veins."
β“˜ Meurigite-Na
Formula: NaFe3+8(PO4)6(OH)7 · 6.5H2O
β“˜ Microcline
Formula: K(AlSi3O8)
βœͺ Mirabilite
Formula: Na2SO4 · 10H2O
β“˜ Moissanite
Formula: SiC
β“˜ Molybdenite
Formula: MoS2
Description: "Very small platy crystals of molybdenite, usually less than 0.1 mm across, have been found in a few cavities in the granite."
β“˜ Monazite-(Ce)
Formula: Ce(PO4)
β“˜ 'Monazite Group'
Formula: REE(PO4)
β“˜ Moncheite
Formula: Pt(Te,Bi)2
β“˜ Moncheite var. Chengbolite
β“˜ Montmorillonite
Formula: (Na,Ca)0.33(Al,Mg)2(Si4O10)(OH)2 · nH2O
β“˜ Murchisite (TL)
Formula: Cr5S6
Type Locality:
β“˜ Muscovite
Formula: KAl2(AlSi3O10)(OH)2
β“˜ Muscovite var. Illite
Formula: K0.65Al2.0[Al0.65Si3.35O10](OH)2
β“˜ Native Bismuth
Formula: Bi
β“˜ Native Copper
Formula: Cu
β“˜ Native Gold
Formula: Au
β“˜ Native Iron
Formula: Fe
β“˜ Native Iron var. Kamacite
Formula: (Fe,Ni)
β“˜ Native Iron var. Martensite
Formula: Fe
β“˜ NatrodufrΓ©nite
Formula: NaFe2+Fe3+5(PO4)4(OH)6 · 2H2O
Description: "Specimens showing dull greyish green globular coatings, occurring very rarely on joints stained with brown iron hydroxides were found in 1994.. he crusts have a slightly silky appearance due to their finely fibrous nature. Scanning electron micrographs show the globules consist of tiny radiating prismatic crystallites."
β“˜ Natrojarosite
Formula: NaFe3(SO4)2(OH)6
β“˜ Nepheline
Formula: Na3K(Al4Si4O16)
β“˜ Nierite
Formula: Si3N4
β“˜ Nontronite
Formula: Na0.3Fe2((Si,Al)4O10)(OH)2 · nH2O
β“˜ Oldhamite
Formula: CaS
β“˜ Opal
Formula: SiO2 · nH2O
β“˜ Opal var. Opal-AN
Formula: SiO2 · nH2O
Description: "Rare hyalite has been recorded as joint fillings."
β“˜ Orthoclase
Formula: K(AlSi3O8)
Description: "Blocky crystals of orthoclase line miarolitic cavities, but have often grown across the cavities and are poorly or non terminated. They are usually white to cream and perthitic, with the sodic phase often etched out leaving a skeletal structure. The crystals commonly show Carlsbad twinning. Large blocky terminated crystals measuring up to 10 x 11x 12cm have been collected."
β“˜ 'Orthopyroxene Subgroup'
β“˜ Pentlandite
Formula: (NixFey)Ξ£9S8
β“˜ Perovskite
Formula: CaTiO3
β“˜ Pickeringite
Formula: MgAl2(SO4)4 · 22H2O
β“˜ Pigeonite
Formula: (CaxMgyFez)(Mgy1Fez1)Si2O6
β“˜ 'Plagioclase'
Formula: (Na,Ca)[(Si,Al)AlSi2]O8
β“˜ 'Plessite'
β“˜ Portlandite
Formula: Ca(OH)2
Description: Specimen was not in situ. Confirmation needed. See discussion in http://www.mindat.org/mesg-7-55384.html "A pale grey chert like mass, measuring about 45 x 30 x 25 cm was found in August 1995. The specimen had apparently been dislodged from where it had been enclosed in granite in the northeast corner of the quarr, about 6 metres from the top of the eastern wall. Thin quartz/calcite veinlets cut the portlandite."
β“˜ Powellite
Formula: Ca(MoO4)
References:
β“˜ 'Protodolomite'
Formula: (Ca,Mg)CO3
β“˜ Pseudomalachite
Formula: Cu5(PO4)2(OH)4
Description: "Pseudomalachite occurs as irregular globular aggregates and, more rarely, rough crystals up to a few mm across, in cavities in the Lake Boga granite. It is pearly to vitreous, and transparent to translucent dark blueish green. It is often associated libethenite and ulrichite. The mineral also occurs as massive cavity fillings and scaly coatings on joint planes, where it its often seen with sampleiite, and may also occur very rarely as layers between cleavage flakes of muscovite."
β“˜ Pseudorutile
Formula: Fe2Ti3O9
β“˜ Pseudorutile var. Hydroxylian Pseudorutile
Formula: FeTi6O13 · 4H2O ?
β“˜ Pyrite
Formula: FeS2
β“˜ Pyrolusite
Formula: Mn4+O2
β“˜ 'Pyroxene Group'
Formula: ADSi2O6
Description: Orthopyroxene & Clinopyroxene, Ca-rich & Ca-poor pyroxenes: Hypersthene w. Augite lamellae most noticeable, but pigeonite also present
β“˜ Pyrrhotite
Formula: Fe1-xS
β“˜ Quartz
Formula: SiO2
Description: "Generally, quartz crystals in the miarolitic cavities are dark smoky to pale pinkish brown, well terminated, translucent to transparent and often gem quality. Crystals up to 23 cm long have been found, although they are more commonly 5-8 cm. They are often coated with a thin veneer of white clay and drusy fluorapatite crystals."
β“˜ Quartz var. Smoky Quartz
Formula: SiO2
β“˜ Redingtonite
Formula: (Fe2+,Mg,Ni)(Cr,Al)2(SO4)4 · 22H2O
β“˜ Rockbridgeite
Formula: (Fe2+0.5Fe3+0.5)2Fe3+3(PO4)3(OH)5
Description: "Dark bluish green irregular masses of rockbridgeite have been found as earthy fillings and globular linings in miarolitic cavities up to about 1 cm across in a medium-grained aplitic phase of the Lake Boga Granite. Hemispheres and globular crusts of transparent yellow cyrilovite frequently coat the rockbridgeite."
β“˜ Rutile
Formula: TiO2
Description: "Small lustrous bipyramidal black crystals of rutile occur on quartz in some cavities."
β“˜ SalΓ©eite
Formula: Mg(UO2)2(PO4)2 · 10H2O
Description: "Saleeite crystals occur in miarolitic cavities and on limonite-encrusted joint planes in the Lake Boga granite. Pale to lemon or greenish yellow translucent to transparent platy crystals occur as fan-like clusters or flattened aggregates. They are usually less than 3 mm on edge but exceptional crystals may reach 9 mm. Thick tabular and unusual prismatic crystals are less common. Saleeite may overgrow torbernite crystals at Lake Boga."
β“˜ Sampleite
Formula: NaCaCu5(PO4)4Cl · 5H2O
Description: "This is one of the most attractive of the rare phosphates at Lake Boga, occurring as vivid sky blue, micaceous aggregates on joint planes and platy to powdery cavity infillings in the granite. Groups of free standing tabular transparent blue crystals up to 0.5 mm high are frequently observed. Sampleite is most closely associated with pseudomalachite, but may also be found with libethenite, turquoise/chalcosiderite, cyrilovite and more rarely, ulrichite."
β“˜ Schorl
Formula: NaFe2+3Al6(Si6O18)(BO3)3(OH)3(OH)
Description: Schorl is confined to the miarolitic cavities forming fine fibrous needle like black/brown crystals. (pers.com. S.Mills)
β“˜ Schreibersite
Formula: (Fe,Ni)3P
β“˜ Schwertmannite
Formula: Fe3+16(OH,SO4)12-13O16 · 10-12H2O
βœͺ Selwynite (TL)
Formula: NaK(Be,Al)Zr2(PO4)4 · 2H2O
Type Locality:
Habit: Has not been found in crystals
Colour: pale purple to purplish blue
Description: "This extremely rare mineral, a sodium beryllium zirconium phoshate, has been found in one of the pegmatite veins in the Wycherproof granite. It infills irregular cavities up to 8mm across, as deep purplish blue vitreous to fibrous masses and as granular pale purle aggregates mixed with limonite and muscovite. It may be associated with wardite and eosphorite."
β“˜ Sepiolite
Formula: Mg4(Si6O15)(OH)2 · 6H2O
β“˜ 'Serpentine Subgroup'
Formula: D3[Si2O5](OH)4
β“˜ Siderite
Formula: FeCO3
β“˜ Sideronatrite
Formula: Na2Fe(SO4)2(OH) · 3H2O
β“˜ Sillimanite
Formula: Al2(SiO4)O
β“˜ 'Smectite Group'
Formula: A0.3D2-3[T4O10]Z2 · nH2O
β“˜ Sphalerite
Formula: ZnS
β“˜ Spinel
Formula: MgAl2O4
β“˜ Spinel var. Pleonaste
Formula: (Mg,Fe)Al2O4
β“˜ Strengite
Formula: FePO4 · 2H2O
β“˜ Taenite
Formula: (Fe,Ni)
β“˜ Tamarugite
Formula: NaAl(SO4)2 · 6H2O
β“˜ Tetrataenite
Formula: FeNi
β“˜ ThΓ©nardite
Formula: Na2SO4
β“˜ Tochilinite
Formula: Fe2+5-6(Mg,Fe2+)5S6(OH)10
β“˜ Topaz
Formula: Al2(SiO4)(F,OH)2
β“˜ Torbernite
Formula: Cu(UO2)2(PO4)2 · 12H2O
Description: "Torbernite is the most widespread of the uranium-bearing phosphates at Lake Boga. It is found on joint planes and in small cavities and is frequently associated with limonite crusts and films. Crystals may also be found on clay filling cavities and between cleavage flakes in books of muscovite. Torbernite usually occurs as thin, lustrous, transparent pale green to emerald green tabular crystals up to 2.5 mm on edge. These may lay flat on joints or occur as free standing aggregates in cavities. Thick tabular to blocky crystals of a more intense green have also been found. Torbernite occurs with most of the other phosphates at Lake Boga."
References:
β“˜ Tridymite
Formula: SiO2
Description: Bladed crystals are unusually pure [silica >99.6%]
β“˜ Troilite
Formula: FeS
β“˜ Turquoise
Formula: CuAl6(PO4)4(OH)8 · 4H2O
Description: "Pale blue, pale green or bluish green globular crusts and individual spheres or hemispheres of minerals in the composition series between turquoise and chalcosiderite are widespread in the Lake Boga granite quarry. They occur most often lining small miarolitic cavities but may also be found on joint planes and in cavities etched in fluorapatite. Individual globules may reach close to 1 mm across. Well formed crystals have not been observed. Massive partial replacements of orthoclase crystals by turquoise have been collected, but are very rare. As an early-formed secondary hydrothermal mineral, turquoise/chalcosiderite is found with most of the other secondary phosphates from Lake Boga. Microprobe analyses of the bluish green crusts show the compositions fall between ferrian turquoise and aluminan chalcosiderite."
β“˜ Ulrichite (TL)
Formula: CaCu(UO2)(PO4)2 · 4H2O
Type Locality:
Description: "This attractive mineral was first collected at the Lake Boga quarry in the mid-1980s. A zone a few metres across at the base of the east wall of the quarry, at a depth of around 20 metres has yielded all the ulrichite so far collected. Ulrichite forms delicate radiating sprays of translucent to transparent, pale green to bright lime green, needle-like crystals up to 1 mm long and 0.05 mm thick. They occur in small close up, irregular miarolitic cavities in a fine-grained equigranular phase of the Lake Boga granite. Some of the cavities are lined or partly filled with a glistening reddish brown clay mineral. Ulrichite is amongst the earliest of the secondary minerals to crystalise at Lake Boga and occurs most frequently with turquoise/chalcosiderite. It is also observed with cyrilovite, libethenite, pseudomalachite and rarely, with torbernite. It has also been found on etched fluorapatite crystals."
β“˜ 'UM2007-17-PO:CaClCuHNa'
Formula: NaCaCu5(PO4)4Cl · nH2O (n~4.5)
β“˜ Uraninite
Formula: UO2
β“˜ Variscite
Formula: AlPO4 · 2H2O
β“˜ 'Wad'
β“˜ Wardite
Formula: NaAl3(PO4)2(OH)4 · 2H2O
Description: "It forms blocky crystals up to 2mm across showing pyramidal forms, occasionally etched, and with a frosting of cyrilovite. Broken crystals are vitreous, transparent and pale yellow. Eosphorite crystals are usually associated with the wardite."
β“˜ Warkite (TL)
Formula: Ca2Sc6Al6O20
Type Locality:
β“˜ Wavellite
Formula: Al3(PO4)2(OH)3 · 5H2O
Description: "Colourless to white, prismatic wavellite crystals up to 1 mm long occur rarely, forming fibrous radiating aggregates in cavities with pale blue turquoise. The mineral has also been found as flattened radiating aggregates of pale blue crystals on joint planes in the granite."
β“˜ Whewellite
Formula: Ca(C2O4) · H2O
β“˜ Wycheproofite (TL)
Formula: NaAlZr(PO4)2(OH) · H2O
Type Locality:
Description: "It forms compact, cream to pinkish orange, fibrous masses filling small cavities in one of the pegmatite veins at Wycheproof. It has a vitreous lustre and is softer than feldspar with witch it may be confused."
β“˜ Xenotime-(Y)
Formula: Y(PO4)
β“˜ Zircon
Formula: Zr(SiO4)

Gallery: