Mineralogy Database

Daomanite Mineral Data

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General Daomanite Information

Help on Chemical  Formula: Chemical Formula: CuPtAsS2
Help on Composition: Composition: Molecular Weight = 397.68 gm
   Copper    15.98 %  Cu
   Arsenic   18.84 %  As
   Platinum  49.05 %  Pt
   Sulfur    16.13 %  S
            100.00 % 
Help on Empirical Formula: Empirical Formula: CuPtAsS2
Help on Environment: Environment: Chalcopyrite-bornite veins in hornblende pyroxenite.
Help on IMA Status: IMA Status: Not Approved IMA 1974
Help on Locality: Locality: Dao and Ma districts, Yanshan, China. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Daomanite + Pronunciation Say DAOMANITE

Daomanite Image

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Comments: Magnification of the micro-aggregate (shown in inset), which consists of white sperrylite, unnamed Cu2(Ni,Co)Pt3S8 and a single daomanite (Dmn) grain, and displays the chain-like morphology. (CanMin, v42:455).
Location: Chromitite layer of the Mount Bol’shaya Varaka deposit, Imandra layered complex, Kola Peninsula, Russia. Scale: See Image.
© Canadian Mineralogist

Daomanite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.3686:1:0.2365
Help on Cell Dimensions: Cell Dimensions: a = 5.852, b = 15.876, c = 3.756, Z = 4; V = 348.96 Den(Calc)= 7.57
Help on Crystal System: Crystal System: Orthorhombic - Pyramidal H-M Symbol (mm2) Space Group: Ama2
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.93(1)(200), 3.29(0.6)(140), 1(0.5)(1.93),1.63(0.5)(1.42), 7.95(0.5)(020), 1.73(0.5)(122), 1.28(0.4)(342), 2.72(0.4)(131),

Physical Properties of Daomanite

Help on Cleavage: Cleavage: {100} Good, {001} Distinct, {010} Fair
Help on Color: Color: Gray, Silver gray.
Help on Density: Density: 7.03
Help on Diaphaneity: Diaphaneity: Opaque
Help on Fracture: Fracture: Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern.
Help on Hardness: Hardness: 3.5-4 - Copper Penny-Fluorite
Help on Luster: Luster: Metallic

Optical Properties of Daomanite

Help on RL Anisotrophism: RL Anisotrophism: Strong.
Help on RL Color: RL Color: Light greenish yellow.
Help on RL Pleochroism: RL Pleochroism: Gold-yellow to grayish green.

Calculated Properties of Daomanite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.55 gm/cc
note: Specific Gravity of Daomanite =7.57 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.16
Boson Index = 0.84
Help on Photoelectric: Photoelectric: PEDaomanite = 757.40 barns/electron
U=PEDaomanite x rElectron Density=4,959.58 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Daomanite is Not Radioactive

Daomanite Classification

Help on  Dana Class: Dana Class: (02)Sulfides - Including Selenides and Tellurides
  (02.05)where Am Bn Xp, with (m+n):p=3:2
  (02.05.07)Dana Group Daomanite* CuPtAsS2 Ama2 mm2
Help on  Strunz Class: Strunz Class: 02.LA.15 02 - SULFIDES and SULFOSALTS (sulfides, selenides, tellurides; arsenides, antimonides, bismuthides; sulfarsenites, sulf
  02.L - Unclassified Sulfosalts
  02.LA -Without essential Pb
02.LA.15 Daomanite* CuPtAsS2 Ama2 mm2

Other Daomanite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(AmMin, Vol 87, p 1513) OPTIC PROP.(AntBidBlaNic1)
Help on See Also: See Also: Links to other databases for Daomanite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - GeoScienceWorld
6 - Google Images
7 - Google Scholar
8 - Handbook of Mineralogy (MinSocAm)
9 - Handbook of Mineralogy (UofA)
10 - MinDAT
11 - Mineralienatlas (Deutsch)
12 - Online Mineral Museum
13 - QUT Mineral Atlas
14 - Ruff.Info

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Dana No: Strunz No: 02.LA.15





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