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Kintoreite
A valid IMA mineral species
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About Kintoreite
Formula:
PbFe3(PO4)(PO3OH)(OH)6
Colour:
Cream to yellowish green and brownish yellow.
Lustre:
Vitreous, Greasy
Hardness:
4
Specific Gravity:
4.34 (Calculated)
Crystal System:
Trigonal
Member of:
Name:
After the type locality, the Kintore opencut, Broken Hill, Yancowinna Co., New South Wales, Australia.
The phosphate analogue of segnitite. Forms a solid-solution series with corkite and segnitite (Kintoreite-Segnitite Series).
Related to kolitschite.
Related to kolitschite.
Unique Identifiers
Mindat ID:
2214
Long-form identifier:
mindat:1:1:2214:5
Similar Names
| Kantorite | A valid IMA mineral species | K2NaMg(SO4)2F |
| Kintoreite-2c | PbFe33+(PO4)2(OH,H2O)6 | |
| Kondörite | A synonym of Konderite |
IMA Classification of Kintoreite
Approved
IMA Formula:
Pb2+Fe3+3(PO4)(PO3OH)(OH)6
Approval year:
1992
First published:
1995
Classification of Kintoreite
8.BL.10
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
8 : PHOSPHATES, ARSENATES, VANADATES
B : Phosphates, etc., with additional anions, without H2O
L : With medium-sized and large cations, (OH, etc.):RO4 = 3:1
42.7.3.6
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
42 : HYDRATED PHOSPHATES, ETC.CONTAINING HYDROXYL OR HALOGEN
7 : (AB)2(XO4)Zq·xH2O
Mineral Symbols
As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.
| Symbol | Source | Reference for Standard |
|---|---|---|
| Kt | IMA–CNMNC | Warr, L.N. (2021). IMA–CNMNC approved mineral symbols. Mineralogical Magazine, 85(3), 291-320. doi:10.1180/mgm.2021.43 |
Physical Properties of Kintoreite
Vitreous, Greasy
Transparency:
Transparent
Colour:
Cream to yellowish green and brownish yellow.
Streak:
Pale yellowish green
Hardness:
4 on Mohs scale
Tenacity:
Brittle
Cleavage:
Distinct/Good
On {001}
On {001}
Density:
4.34 g/cm3 (Calculated)
Optical Data of Kintoreite
Type:
Uniaxial (-)
RI values:
nω = 1.935 - 1.955 nε = 1.935
Surface Relief:
Very High (positive)
Relative to Canada balsam mounting medium (n ≈ 1.537).
Relative to Canada balsam mounting medium (n ≈ 1.537).
This shows the grain boundary and Becke line effect under plane-polarised
light, based on the contrast between this mineral's average refractive
index and the mounting medium. It does not take into account mineral
colouration.
In focus
Interference Figure:
This shows the idealized uniaxial interference figure - the conoscopic
(convergent-light, Bertrand-lens-in) view, for a grain cut with the optic axis
centred and vertical. The coloured rings are isochromatics, computed with the
same physics as the Michel-Lévy bar above; the dark cross is the isogyre.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
For a genuinely uniaxial mineral viewed this way, that cross stays perfectly stationary if you rotate the stage - unlike a biaxial mineral, where it splits apart on rotation. That invariance is itself the standard diagnostic test for telling uniaxial and biaxial minerals apart at the microscope.
Pleochroism:
Visible
Comments:
Light yellowish green to medium yellow.
Chemistry of Kintoreite
Mindat Formula:
PbFe3(PO4)(PO3OH)(OH)6
Element Weights:
Crystallography of Kintoreite
Crystal System:
Trigonal
Class (H-M):
3m(32/m) - Hexagonal Scalenohedral
Space Group:
R3m
Cell Parameters:
a = 7.2963(5) Å, c = 16.8491(5) Å
Ratio:
a:c = 1 : 2.309
Unit Cell V:
776.81 ų (Calculated from Unit Cell)
Z:
3
Comment:
Date for near endmember composition (Grey et al., 2009)
Crystal Structure
Load
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Unit Cell | Unit Cell Packed
2x2x2 | 3x3x3 | 4x4x4
Show
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Big Balls | Small Balls | Just Balls | Spacefill
Polyhedra Off | Si Polyhedra | All Polyhedra
Remove metal-metal sticks
Display Options
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
Black Background | White Background
Perspective On | Perspective Off
2D | Stereo | Red-Blue | Red-Cyan
View
CIF File Best | x | y | z | a | b | c
CIF File Best | x | y | z | a | b | c
Rotation
Stop | Start
Stop | Start
Labels
Console Off | On | Grey | Yellow
Console Off | On | Grey | Yellow
Data courtesy of the American Mineralogist Crystal Structure Database. Click on an AMCSD ID to view structure
| ID | Species | Reference | Link | Year | Locality | Pressure (GPa) | Temp (K) |
|---|---|---|---|---|---|---|---|
| 0004932 | Kintoreite | Grey I E, Mumme W G, Mills S J, Birch W D, Wilson N C (2009) The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite American Mineralogist 94 676-683 |  | 2009 | Kintore mine at Broken Hill, New South Wales | 0 | 293 |
| 0004931 | Kintoreite | Grey I E, Mumme W G, Mills S J, Birch W D, Wilson N C (2009) The crystal chemical role of Zn in alunite-type minerals: Structure refinements for kintoreite and zincian kintoreite American Mineralogist 94 676-683 | | 2009 | Schone Aussicht mine, near Dernbach, Germany | 0 | 293 |
| 0014525 | Kintoreite | Kharisun, Taylor M R, Bevan D J M, Pring A (1997) The crystal structure of kintoreite, PbFe3(PO4)2(OH,H2O)6 Mineralogical Magazine 61 123-129 | | 1997 | Kintore opencut, Broken Hill, New South Wales, Australia | 0 | 293 |
CIF Raw Data - click here to close
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 3.07 Å | (100) |
| 5.96 Å | (90) |
| 3.67 Å | (60) |
| 2.538 Å | (50) |
| 2.257 Å | (50) |
| 1.979 Å | (50) |
| 2.971 Å | (40) |
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47c : [Carbonates, phosphates, borates, nitrates] | |
| 47d : [Arsenates, antimonates, selenates, bismuthinates] |
Type Occurrence of Kintoreite
Co-Type Localities:
General Appearance of Type Material:
Clusters and coatings of cream to yellowish green rhombohedral crystals up to 2 mm. It also forms waxy, yellowish green globular crusts and hemispheres on other phosphate minerals.
Place of Conservation of Type Material:
The South Australia Museum, Adelaide, Australia, G14354
Museum Victoria, Melbourne, Australia, M42891.
Museum Victoria, Melbourne, Australia, M42891.
Geological Setting of Type Material:
Oxidation of primary ore rich in galena, in the presence of solutions with high P/(As + S) ratios.
Associated Minerals at Type Locality:
Clara Mine, Oberwolfach, Ortenaukreis, Freiburg Region, Baden-Württemberg, Germany