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Timroseite

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About TimroseiteHide

Timothy (Tim) P. Rose
Formula:
Pb2Cu5(TeO6)2(OH)2
Colour:
Olive to lime green, dark olive green
Lustre:
Adamantine, Dull
Hardness:
Specific Gravity:
6.982 (Calculated)
Crystal System:
Orthorhombic
Name:
Named in honor of Mr. Timothy Rose, American geochemist, mineral collector/micromounter, of Tracy, California, who collected studied material.
This page provides mineralogical data about Timroseite.


Classification of TimroseiteHide

Approved
Approval Year:
2009

Pronounciation of TimroseiteHide

Pronounciation:
PlayRecorded byCountry
Jolyon & Katya RalphUnited Kingdom

Physical Properties of TimroseiteHide

Adamantine, Dull
Colour:
Olive to lime green, dark olive green
Streak:
Very pale yellowish green
Hardness:
2½ on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
None Observed
Fracture:
Irregular/Uneven
Density:
6.982 g/cm3 (Calculated)

Optical Data of TimroseiteHide

Type:
Biaxial (+)
RI values:
n = 2.113
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
None observed.
Pleochroism:
Visible
Comments:
X = greenish yellow, Y = yellowish green, Z = dark green.
Comments:
Average refractive index (n = 2.113) was calculated from the Gladstone-Dale relationship. 2V = large.

Chemical Properties of TimroseiteHide

Formula:
Pb2Cu5(TeO6)2(OH)2
Common Impurities:
Cl

Crystallography of TimroseiteHide

Crystal System:
Orthorhombic
Class (H-M):
mm2 - Pyramidal
Space Group:
Pmn21
Cell Parameters:
a = 11.5340(5) Å, b = 9.6225(4) Å, c = 5.2000(2) Å
Ratio:
a:b:c = 1.199 : 1 : 0.54
Unit Cell V:
577.13 ų
Z:
2
Morphology:
Observed forms: {001}, {110} and {010}.
Twinning:
No twinning was observed.
Comment:
Original space group setting: P21nm

X-Ray Powder DiffractionHide

Powder Diffraction Data:
d-spacingIntensity
3.693 (43)
3.578 (44)
3.383 (30)
3.008 (84)
2.950 (88)
2.870 (30)
2.732 (100)
1.983 (30)
1.785 (33)
1.475 (36)

Type Occurrence of TimroseiteHide

General Appearance of Type Material:
Irregular rounded crystalline masses or diamond-shaped plates in subparallel sheaf-like aggregates.
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County (62531, 62532, 62533).
Geological Setting of Type Material:
On fracture surfaces and in small vugs in quartz veins.
Associated Minerals at Type Locality:

Synonyms of TimroseiteHide

Common AssociatesHide

Associated Minerals Based on Photo Data:
Khinite14 photos of Timroseite associated with Khinite on mindat.org.
Gold7 photos of Timroseite associated with Gold on mindat.org.
Chlorargyrite4 photos of Timroseite associated with Chlorargyrite on mindat.org.
Quartz2 photos of Timroseite associated with Quartz on mindat.org.
Fluorite2 photos of Timroseite associated with Fluorite on mindat.org.
Markcooperite1 photo of Timroseite associated with Markcooperite on mindat.org.
Wulfenite1 photo of Timroseite associated with Wulfenite on mindat.org.
Mcalpineite1 photo of Timroseite associated with Mcalpineite on mindat.org.
Caledonite1 photo of Timroseite associated with Caledonite on mindat.org.
Cerussite1 photo of Timroseite associated with Cerussite on mindat.org.

Fluorescence of TimroseiteHide

Non-fluorescent.

Other InformationHide

Notes:
In dilute HCl, timroseite immediately decomposes, turning opaque white, and then the residue slowly dissolves.
Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for TimroseiteHide

Reference List:
Sort by Year (asc) | by Year (desc) | by Author (A-Z) | by Author (Z-A)
A. R. Kampf, S. J. Mills, R. M. Housley, J. Marty, and B. Thorne (2010): Lead-tellurium oxysalts from Otto Mountain near Baker, California: V. Timroseite, Pb2Cu52+(Te6+O6)2(OH)2, and paratimroseite, Pb2Cu42+(Te6+O6)2(H2O)2, two new tellurates with Te-Cu polyhedral sheets. American Mineralogist, 95, 1560-1568.

Internet Links for TimroseiteHide

Localities for TimroseiteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for 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). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (eg from pseudomorphs.)

All localities listed without proper references should be considered as questionable.
USA (TL)
 
  • California
    • San Bernardino Co.
      • Silver Lake District
        • Soda Mts
          • Baker
            • Otto Mountain
Kampf, A.R., Mills, S.J., Housley, R.M., Marty, J., and Thorne, B. (2010): American Mineralogist 95, 1554–1559; A. R. Kampf, S. J. Mills, R. M. Housley, J. Marty, and B. Thorne (2010): Lead-tellurium oxysalts from Otto Mountain near Baker, California: V. Timroseite, Pb2Cu52+(Te6+O6)2(OH)2, and paratimroseite, Pb2Cu42+(Te6+O6)2(H2O)2, two new tellurates with Te-Cu polyhedral sheets. American Mineralogist, 95, 1560-1568.
A. R. Kampf, S. J. Mills, R. M. Housley, J. Marty, and B. Thorne (2010): Lead-tellurium oxysalts from Otto Mountain near Baker, California: V. Timroseite, Pb2Cu52+(Te6+O6)2(OH)2, and paratimroseite, Pb2Cu42+(Te6+O6)2(H2O)2, two new tellurates with Te-Cu polyhedral sheets. American Mineralogist, 95, 1560-1568.; Joe Marty specimens; EDS and XRD confirmed.
Rocks & Minerals 86:132-142
Van King; Collected by and in the collection of Brent Thorne.
Housley R., pers.comm., May 2017
Collected by and in the collection of Brent Thorne.
  • New Mexico
    • Hidalgo Co.
      • Peloncillo Mts
        • San Simon District
Collected by Ron Gibbs and XRD confirmed by Tony Kampf.
Joe Marty, Anthony Kampf, Robert Housley, Stuart Mills, Stefan Weiss (2010) Seltene neue Tellurmineralien aus Kalifornien, Utah, Arizona und New Mexico (USA). Lapis, 35, #12, 42-51.
Mineral and/or Locality  
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