Paolovit
| Paolovit | |
|---|---|
| General and classification | |
| other names |
IMA 1972-025 |
| chemical formula | Pd 2 Sn |
|
Mineral class (and possibly department) |
Elements - metals and intermetallic alloys |
|
System no. to Strunz and to Dana |
1.AG.20 ( 8th edition : I / A.17) 02/01/06/01 |
| Crystallographic Data | |
| Crystal system | orthorhombic |
| Crystal class ; symbol | orthorhombic-dipyramidal; 2 / m 2 / m 2 / m |
| Space group | Pbnm (No. 62, position 3) |
| Lattice parameters | a = 8.11 Å ; b = 5.66 Å; c = 4.32 Å |
| Formula units | Z = 4 |
| Twinning | polysynthetic |
| Physical Properties | |
| Mohs hardness | 4.5 (VHN 10 = 329 to 378) |
| Density (g / cm 3 ) | 11.08 |
| Cleavage | Please complete |
| colour | purple-pink |
| Line color | Please complete |
| transparency | opaque |
| shine | metallic |
Paolovit is a very rare mineral from the mineral class of elements, more precisely metals and intermetallic compounds . It crystallizes in the orthorhombic crystal system with the chemical composition Pd 2 Sn and forms irregularly shaped grains that are embedded in other minerals.
Etymology and history
Paolovit was first found in 1970 by AD Genkin, TL Jewstignejewa, LN Wjalsow, IP Laputina and NV Gronewa in the type locality on the Taimyr peninsula in northern Siberia ( Russia ). It is named after the chemical composition of palladium ( Pa ) and tin (Russian olowo ).
classification
In the Strunz system , Paolovit is counted among the metals and intermetallic compounds, a subgroup of the elements. After the 8th edition it forms a group with Naldrettit , Cabriit , Taimyrit and Tatyanait . In the 9th edition , it forms a subgroup of the PGE (platinum group elements) metal alloys with Cabriit.
In the Dana system , it forms a separate subgroup of the metallic elements and alloys with platinum metals .
Crystal structure
Paolovit crystallizes in the orthorhombic crystal system in the space group Pbnm (space group no. 62, position 3) with the lattice parameters a = 8.11 Å , b = 5.66 Å and c = 4.324 Å as well as four formula units per unit cell .
Education and Locations
Paolovit forms in sulphidic copper - nickel ores. It is associated with Cubanit , chalcopyrite , galena , talnakhite , Mooihoekit , magnetite , sperrylite , Sobolevskit , Taimyrit , polarity , Maslovit , Atokit-Rustenbergit , Froodit , silver , palladium and bismuth .
In addition to its type locality, other finds are known mainly from other regions of Russia. These include the Sajan Mountains , the Kola Peninsula , the Oulankajoki River and the Lake Baikal area . Outside of Russia, finds from Midu in China , the Merensky Reef in South Africa and Albany in the US state of Wyoming are known.
See also
literature
- AD Genkin, TL Evstigneeva, LN Vyalsov, IP Laputina, NV Groneva: Paolovite, Pd 2 Sn, a new mineral from copper-nickel sulfide ores. In: Geologiya Rudnykh Mestorozhdenii. Volume 16 (1974), 98-103 (in Russian)
- Michael Fleischer : New Mineral Names. In: American Mineralogist. Volume 59 (1974), pp. 1330-1332 ( PDF 336.6 kB ; p. 2)
- Paolovite , In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America , 2001 ( PDF 61.6 kB )
Web links
Individual evidence
- ^ A b c Hugo Strunz , Ernest H. Nickel : Strunz Mineralogical Tables. Chemical-structural Mineral Classification System . 9th edition. E. Schweizerbart'sche Verlagbuchhandlung (Nägele and Obermiller), Stuttgart 2001, ISBN 3-510-65188-X , p. 44 .
- ↑ Paolovite , In: John W. Anthony, Richard A. Bideaux, Kenneth W. Bladh, Monte C. Nichols (Eds.): Handbook of Mineralogy, Mineralogical Society of America , 2001 ( PDF 61.6 kB )