Log In
Terlinguacreekite
A valid IMA mineral species
This page is currently not sponsored. Click here to sponsor this page.
About Terlinguacreekite
Formula:
Hg2+3Cl2O2
Colour:
Red-orange, dark orange, lemon yellow; black (in strong light)
Lustre:
Vitreous
Specific Gravity:
9.899 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in 2005 by Andrew C. Roberts, Robert A. Gault, Werner H. Paar, Mark A. Cooper, Frank C. Hawthorne, Peter C. Burns, Sharon Cisneros, and Eugene E. Foord for the type locality at Terlingua mining district, Mariposa mine, Texas, USA.
Type Locality:
This page provides mineralogical data about Terlinguacreekite.
Unique Identifiers
Mindat ID:
27470
Long-form identifier:
mindat:1:1:27470:8
IMA Classification of Terlinguacreekite
Approved
IMA Formula:
Hg2+3O2Cl2
Approval year:
2004
First published:
2005
Type description reference:
Roberts, A. C., Gault, R. A., Paar, W. H., Cooper, M. A., Hawthorne, F. C., Burns, P. C., Cisneros, S., Foord, E. E. (2005) Terlinguacreekite, Hg2+3O2Cl2, a new mineral species from the Perry Pit, Mariposa Mine, Terlingua Mining District, Brewster County, Texas, U.S.A. The Canadian Mineralogist, 43 (3) 1055-1060 doi:10.2113/gscanmin.43.3.1055
Classification of Terlinguacreekite
3.DD.55
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
D : With Hg
3 : HALIDES
D : Oxyhalides, hydroxyhalides and related double halides
D : With Hg
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 |
|---|---|---|
| Tck | 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 Terlinguacreekite
Vitreous
Transparency:
Transparent
Colour:
Red-orange, dark orange, lemon yellow; black (in strong light)
Comment:
"Material from the McDermitt mine is reversibly photosensitive, and turns from vivid orange to black in strong light." (Roberts et al., 2005).
Streak:
Yellow
Hardness Data:
Could not be measured
Comment:
Soft, can be easily crushed between glass slides
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
9.899 g/cm3 (Calculated)
Optical Data of Terlinguacreekite
Anisotropism:
distinct
Bireflectance:
very weak - air; distinct -oil
Reflectivity:
| Wavelength | R1 (%) | R2 (%) | imR1 (%) | imR2 (%) |
|---|---|---|---|---|
| 400nm | 16.7% | 19.0% | 4.2% | 5.0% |
| 420nm | 16.2% | 18.7% | 4.0% | 4.9% |
| 440nm | 15.9% | 17.4% | 3.9% | 4.6% |
| 460nm | 15.6% | 16.9% | 3.7% | 4.5% |
| 470nm | 15.4% | 16.5% | 3.6% | 4.4% |
| 480nm | 15.1% | 16.2% | 3.5% | 4.3% |
| 500nm | 14.9% | 16.0% | 3.5% | 4.2% |
| 520nm | 14.6% | 15.8% | 3.4% | 4.1% |
| 540nm | 14.5% | 15.6% | 3.4% | 4.1% |
| 546nm | 14.5% | 15.6% | 3.4% | 4.1% |
| 560nm | 14.4% | 15.5% | 3.4% | 4.1% |
| 580nm | 14.4% | 15.4% | 3.4% | 4.2% |
| 589nm | 14.3% | 15.4% | 3.4% | 4.2% |
| 600nm | 14.2% | 15.4% | 3.4% | 4.2% |
| 620nm | 14.2% | 15.3% | 3.4% | 4.2% |
| 640nm | 14.2% | 15.2% | 3.5% | 4.3% |
| 650nm | 14.2% | 15.2% | 3.5% | 4.3% |
| 660nm | 14.1% | 15.2% | 3.5% | 4.3% |
| 680nm | 14.0% | 15.1% | 3.5% | 4.3% |
| 700nm | 14.0% | 15.1% | 3.5% | 4.3% |
Graph shows reflectance levels at different wavelengths (in nm). Peak reflectance is 19.0%.
R1 shown in black, R2 shown in red, imR1 shown in green, imR2 shown in blue
Colour in reflected light:
Bluish grey
Internal Reflections:
Yellow orange - orange
Comments:
Some material is reversibly photosensitive (McDermitt)
Chemistry of Terlinguacreekite
Mindat Formula:
Hg2+3Cl2O2
Element Weights:
Elements listed:
Crystallography of Terlinguacreekite
Crystal System:
Orthorhombic
Cell Parameters:
a = 6.737(3) Å, b = 25.528(10) Å, c = 5.533(2) Å
Ratio:
a:b:c = 0.264 : 1 : 0.217
Unit Cell V:
951.6 ų
Z:
8
Morphology:
Subhedral, acicular to prismatic, elongation [001], with a maximum length-to-width ratio of 4:1.
Twinning:
Attempts to solve the crystal structure indicate that the mineral has some form of complex twinning.
Comment:
Point Group: mm2 or 2/m 2/m 2/m.;: Space Group: Imam, Imcm, Ima2 or I2cm.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 5.413 Å | (30) |
| 4.063 Å | (80) |
| 3.201 Å | (50) |
| 3.023 Å | (50) |
| 2.983 Å | (60) |
| 2.858 Å | (30) |
| 2.765 Å | (50) |
| 2.518 Å | (100) |
Reference:
Roberts, A. C., Gault, R. A., Paar, W. H., Cooper, M. A., Hawthorne, F. C., Burns, P. C., Cisneros, S., Foord, E. E. (2005) Terlinguacreekite, Hg2+3O2Cl2, a new mineral species from the Perry Pit, Mariposa Mine, Terlingua Mining District, Brewster County, Texas, U.S.A. The Canadian Mineralogist, 43 (3) 1055-1060 doi:10.2113/gscanmin.43.3.1055
Comments:
From type description.
Geological Environment
Paragenetic Mode(s):
| Paragenetic Mode | Earliest Age (Ga) |
|---|---|
| Stage 7: Great Oxidation Event | <2.4 |
| 47g : [Halogen-bearing surface weathering minerals] | |
| 47h : [Near-surface oxidized, dehydrated minerals] |
Type Occurrence of Terlinguacreekite
General Appearance of Type Material:
Millimeter-sized anhedral dark orange to reddish orange crusts of variable thickness on calcite, and rarely as 0.5 mm-sized aggregates of crystals.
Place of Conservation of Type Material:
The Systematic Reference Series, National Mineral Collection, Geological Survey of Canada (MNC68100).
Natural History Museum, London, England (BM2004, 54).
Natural History Museum, London, England (BM2004, 54).
Geological Setting of Type Material:
A secondary mineral, probably formed from the alteration of primary cinnabar or native mercury.
Associated Minerals at Type Locality:
Reference:
Roberts, A. C., Gault, R. A., Paar, W. H., Cooper, M. A., Hawthorne, F. C., Burns, P. C., Cisneros, S., Foord, E. E. (2005) Terlinguacreekite, Hg2+3O2Cl2, a new mineral species from the Perry Pit, Mariposa Mine, Terlingua Mining District, Brewster County, Texas, U.S.A. The Canadian Mineralogist, 43 (3) 1055-1060 doi:10.2113/gscanmin.43.3.1055
Synonyms of Terlinguacreekite
Other Language Names for Terlinguacreekite
Common Associates
Associations Based on Photo Data:
| 28 photos of Terlinguacreekite associated with Kleinite | (Hg2N)(Cl,SO4) · nH2O |
| 16 photos of Terlinguacreekite associated with Quartz | SiO2 |
| 6 photos of Terlinguacreekite associated with Calcite | CaCO3 |
| 5 photos of Terlinguacreekite associated with Cinnabar | HgS |
| 3 photos of Terlinguacreekite associated with Stibiconite | Sb3+Sb5+2O6(OH) |
| 2 photos of Terlinguacreekite associated with Baryte | BaSO4 |
| 2 photos of Terlinguacreekite associated with 'Hyalite' | SiO2 · nH2O |
| 2 photos of Terlinguacreekite associated with Mikecoxite | [CHg4]OCl2 |
| 1 photo of Terlinguacreekite associated with Kuznetsovite | [Hg2]2+Hg2+[AsO4]Cl |
| 1 photo of Terlinguacreekite associated with 'Chalcedony' | SiO2 |
Related Minerals - Strunz-mindat Grouping
| 3.DD. | Mikecoxite | [CHg4]OCl2 |
| 3.DD.05 | Eglestonite | [Hg2]2+3OCl3(OH) |
| 3.DD.05 | Kadyrelite | [Hg2]2+3OBr3(OH) |
| 3.DD.10 | Poyarkovite | [Hg2]2+3Cl2O2 |
| 3.DD.15 | Hanawaltite | [Hg2]2+3Hg2+(Cl,OH)2O3 |
| 3.DD.20 | Terlinguaite | [Hg3]4+Hg2+Cl2O2 |
| 3.DD.25 | Pinchite | Hg2+5Cl2O4 |
| 3.DD.30 | Gianellaite | [(Hg2N)2](SO4)(H2O)x |
| 3.DD.30 | Mosesite | (Hg2N)(Cl,SO4,MoO4) · H2O |
| 3.DD.35 | Kleinite | (Hg2N)(Cl,SO4) · nH2O |
| 3.DD.40 | Tedhadleyite | [Hg2]2+5Hg2+I2(Cl,Br)2O4 |
| 3.DD.45 | Vasilyevite | [Hg2]2+10I3Br2Cl[CO3]O6 |
| 3.DD.50 | Aurivilliusite | [Hg2]2+Hg2+2(I,Br,Cl)2O2 |
| 3.DD.60 | Kelyanite | [Hg]2+6Sb3+BrCl2O6 |
| 3.DD.65 | Comancheite | Hg2+55N3-24(NH2,OH)4(Cl,Br)34 |
| 3.DD.70 | Gaildunningite | Hg2+3[NHg2+2]18(Cl,I,OH,Br,S)24 |
Fluorescence of Terlinguacreekite
Not fluorescent
Other Information
Notes:
Some material is photosensitive, reversibly changing from vivid orange to black in strong light.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.
Internet Links for Terlinguacreekite
mindat.org URL:
https://www.mindat.org/min-27470.html
Please feel free to link to this page.
Please feel free to link to this page.
Search Engines:
External Links:
Mineral Dealers:
References for Terlinguacreekite
Reference List:
Roberts, A. C., Gault, R. A., Paar, W. H., Cooper, M. A., Hawthorne, F. C., Burns, P. C., Cisneros, S., Foord, E. E. (2005) Terlinguacreekite, Hg2+3O2Cl2, a new mineral species from the Perry Pit, Mariposa Mine, Terlingua Mining District, Brewster County, Texas, U.S.A. The Canadian Mineralogist, 43 (3) 1055-1060 doi:10.2113/gscanmin.43.3.1055
Localities for Terlinguacreekite
Showing 3 localities.
symbol to view information about a locality.
The Locality List
- This locality has map coordinates listed.
- This locality has estimated coordinates.
ⓘ - Click for references and further information on this occurrence.
? - Indicates mineral may be doubtful at this locality.
- Good crystals or important locality for species.
- World class for species or very significant.
(TL) - Type Locality for a valid mineral species.
(FRL) - First Recorded Locality for everything else (eg varieties).
All localities listed without proper references should be considered as questionable.
USA | |
| Roberts et al. (2005) |
| Roberts et al. (2005) |
| Roberts et al. (2005) |
Quick NavTopAbout TerlinguacreekiteUnique IdentifiersIMA Classification Classification Mineral SymbolsPhysical Properties Optical Data Chemistry Crystallography X-Ray Powder DiffractionGeological EnvironmentType Occurrence SynonymsOther LanguagesCommon AssociatesStrunz-MindatFluorescence Other InformationInternet Links References Localities Locality List
McDermitt Mine, Opalite Mining District, Humboldt County, Nevada, USA