Paratimroseite
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About Paratimroseite
Tim Rose
Formula:
Pb2Cu4(TeO6)2(H2O)2
Colour:
Vibrant "neon" green, lime green
Lustre:
Adamantine, Dull
Hardness:
3
Specific Gravity:
6.557 (Calculated)
Crystal System:
Orthorhombic
Name:
Name in allusion to its resemblance to Timroseite.
Up to date (2018) there are approx. 10 paratimroseite specimens known and verified.
Classification of Paratimroseite
Approved
Approval Year:
2009
Physical Properties of Paratimroseite
Adamantine, Dull
Colour:
Vibrant "neon" green, lime green
Streak:
Very pale green
Hardness:
3 on Mohs scale
Hardness Data:
Estimated
Tenacity:
Brittle
Cleavage:
Distinct/Good
on {001}
on {001}
Fracture:
Irregular/Uneven
Density:
6.557 g/cm3 (Calculated)
Optical Data of Paratimroseite
Type:
Biaxial (-)
RI values:
n = 2.059
Max Birefringence:
δ = 0.000
Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.
and does not take into account mineral colouration.
Surface Relief:
Very High
Dispersion:
None observed.
Pleochroism:
Visible
Comments:
X = light green, Y = Z = green.
Comments:
Average refractive index (n = 2.059) was calculated from the Gladstone-Dale relationship. 2V = large.
Chemical Properties of Paratimroseite
Formula:
Pb2Cu4(TeO6)2(H2O)2
Common Impurities:
Cl
Crystallography of Paratimroseite
Crystal System:
Orthorhombic
Class (H-M):
2 2 2 - Disphenoidal
Space Group:
P21 21 21
Cell Parameters:
a = 5.1943(4) Å, b = 9.6198(10) Å, c = 11.6746(11) Å
Ratio:
a:b:c = 0.54 : 1 : 1.214
Unit Cell V:
583.35 ų
Z:
2
Morphology:
Blades are elongated on [100], flattened on {001}, and exhibit the forms {001}, {010}, {120}, and {100}.
Twinning:
None observed.
X-Ray Powder Diffraction
Powder Diffraction Data:
| d-spacing | Intensity |
|---|---|
| 4.771 | (76) |
| 4.463 | (32) |
| 3.544 | (44) |
| 3.029 | (100) |
| 2.973 | (48) |
| 2.733 | (30) |
| 2.665 | (41) |
| 2.469 | (40) |
| 2.246 | (34) |
| 2.151 | (30) |
Type Occurrence of Paratimroseite
General Appearance of Type Material:
Blades, which are intergrown in irregular clusters; also botryoids.
Place of Conservation of Type Material:
Natural History Museum of Los Angeles County (62263, 62534).
Geological Setting of Type Material:
On fracture surfaces and in small vugs in quartz veins.
Associated Minerals at Type Locality:
Synonyms of Paratimroseite
Fluorescence of Paratimroseite
Non-fluorescent.
Other Information
Notes:
In dilute HCl paratimroseite 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 Paratimroseite
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 Paratimroseite
mindat.org URL:
https://www.mindat.org/min-39838.html
Please feel free to link to this page.
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External Links:
Mineral Dealers:
Localities for Paratimroseite
symbol to view information about a locality.
The Locality List
- 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).
All localities listed without proper references should be considered as questionable.
USA (TL) | |
| 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 |
| Collected by Tim Rose. PXRD analyzed by Tony Kampf. |
Aga Mine, Otto Mountain, Baker, Soda Mts, Silver Lake District, San Bernardino Co., California, USA