Classification of Tillmannsite |
| IMA status: | Approved 2001 |
|---|
| Strunz 8th edition ID: | 7/A.11-05
|
|---|
| Nickel-Strunz 10th (pending) edition ID: | 8.AC.80
8 : PHOSPHATES, ARSENATES, VANADATES A : Phosphates, etc. without additional anions, without H2O C : With medium-sized and large cations |
|---|
| mindat.org URL: | http://www.mindat.org/min-28901.html Please feel free to link to this page. |
|---|
Type Occurrence of Tillmannsite |
| Type Locality: | Roua Mines (Clue de Roua), Daluis, Guillaumes, Alpes-Maritimes, Provence-Alpes-Côte d'Azur, France |
|---|
| General Appearance of Type Material: | aggregates to 0.2 mm in diameter, consisting of pseudo-octahedral crystals to 50 µm maximum dimension |
|---|
| Associated Minerals at type locality: | |
|---|
Physical Properties of Tillmannsite |
| Lustre: | Adamantine |
|---|
| Diaphaneity (Transparency): | Translucent |
|---|
| Colour: | Red, brownish red |
|---|
| Streak: | Brownish red |
|---|
| Density (calculated): | 7.733 g/cm3 |
|---|
Crystallography of Tillmannsite |
| Crystal System: | Tetragonal |
|---|
| Class (H-M): | 4 - Pyramidal |
|---|
| Space Group: | I4 |
|---|
| Cell Parameters: | a = 7.727Å, c = 4.648Å
|
|---|
| Ratio: | a:c = 1 : 0.602 |
|---|
| Unit Cell Volume: | V 277.5 ų |
|---|
| Z: | 2 |
|---|
| X-Ray Powder Diffraction: | | d-spacing | | Intensity | | 5.45 | | (25) | | 2.772 | | (100) | | 2.324 | | (30) | | 2.254 | | (20) |
|
|---|
| Comments: | Format: d/Å (I/%) (hkl) |
|---|
Optical Data of Tillmannsite |
| Type: | Uniaxial (+) |
|---|
| Pleochroism: | Strong |
|---|
| Comments: | red-orange to orange-brown |
|---|
Chemical Properties of Tillmannsite |
| Formula: | |
|---|
| Essential elements: | Ag, Hg, O, V |
|---|
| All elements listed in formula: | Ag, As, Hg, O, V |
|---|
Relationship of Tillmannsite to other Species |
Related Minerals - Nickel-Strunz Grouping):
- + | |
|---|
Other Names for Tillmannsite |
| Synonyms: | |
|---|
| Other Languages: | |
|---|
Other Information |
| Health Warning: | No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care. |
|---|
References for Tillmannsite |
Reference List:
- + | Sarp, H., D. Y. Pushcharovsky, J. E. MacLean, S. J. Teat and V. N. Zubova (2003): "Tillmannsite, (Ag3Hg)(V,As)O4, a new mineral : its description and crystal structure", European Journal of Mineralogy: 15: 177-180.
|
|---|
Internet Links for Tillmannsite |
| Search Engines: |
Look for Tillmannsite on Google
Look for Tillmannsite images on Google |
|---|
| External Links: | Look for Tillmannsite on WebmineralLook for Tillmannsite on Athena MineralogyLook for Tillmannsite on Mineralien AtlasRaman and XRD data at RRUFF projectAmerican Mineralogist Crystal Structure Database |
|---|
| Mineral Dealers: | By minerals from YourMineralCollectionMineral Classics - Worldwide Collector Quality Minerals and GemsBuy RARE Minerals from Rocks of AfricaHigh-end worldwide specimens & outstanding customer serviceFine Minerals from Weinrich Minerals, Inc.Pricedownminerals.com - Reverse Auctions and ShopFind Tillmannsite on www.crystalclassics.co.ukRare and Unusual minerals at Mineralogical Research CompanySearch for minerals at HeliodorSpiriferMinerals.com - high quality low pricesBuy fine minerals and gemstones from Pala InternationalBuy from David K Joyce minerals |
|---|
| Jobs: | Mining & Geology Jobs |
|---|
Localities for Tillmannsite |
|