Mineralogy Database

Sanmartinite Mineral Data

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General Sanmartinite Information

Help on Chemical  Formula: Chemical Formula: (Zn,Fe++)WO4
Help on Composition: Composition: Molecular Weight = 310.85 gm
   Zinc      15.78 %  Zn   19.64 % ZnO
   Iron       4.49 %  Fe    5.78 % FeO
   Tungsten  59.14 %  W    74.58 % WO3
   Oxygen    20.59 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Zn0.75Fe2+0.25(WO4)
Help on Environment: Environment: Alteration product of scheelite in a quartz vein between granite and granite pegmatite intruding Precambrian crystalline schists.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1948
Help on Locality: Locality: Los Cerrillos, seven km southwest of San Mart�in, San Luis Province, Argentina. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the locality.
Help on Name Pronunciation: Name Pronunciation: Sanmartinite + Pronunciation Say SANMARTINITE
Help on Synonym: Synonym: ICSD 84540
  PDF 15-774

Sanmartinite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.8193:1:0.8636
Help on Cell Dimensions: Cell Dimensions: a = 4.68, b = 5.712, c = 4.933, Z = 2; beta = 90.3° V = 131.87 Den(Calc)= 7.83
Help on Crystal System: Crystal System: Monoclinic - Prismatic H-M Symbol (2/m) Space Group: P 2/c
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.926(1), 1.7(0.6), 2.467(0.5),

Physical Properties of Sanmartinite

Help on Cleavage: Cleavage: {010} Perfect
Help on Color: Color: Brownish black, Dark brown.
Help on Density: Density: 6.7
Help on Diaphaneity: Diaphaneity: Transparent to Opaque
Help on Hardness: Hardness: 4-4.5 - Between Fluorite and Apatite
Help on Luster: Luster: Resinous
Help on Streak: Streak: red brown

Optical Properties of Sanmartinite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.114 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.046 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1616,KPDmeas= 0.1888,KC= 0.1694
Ncalc = 2.14 - 2.33
Help on Optical Data: Optical Data: Biaxial (+), b=2.25-2.28

Calculated Properties of Sanmartinite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=6.80 gm/cc
note: Specific Gravity of Sanmartinite =7.83 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.09
Boson Index = 0.91
Help on Photoelectric: Photoelectric: PESanmartinite = 744.89 barns/electron
U=PESanmartinite x rElectron Density=5,066.02 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Sanmartinite is Not Radioactive

Sanmartinite Classification

Help on  Dana Class: Dana Class: (48)Anhydrous Molybdates and Tungstates
  (48.01)where A XO4
  (48.01.01)Wolframite series Wolframite* (Fe,Mn)WO4 P 2/c 2/m Hubnerite MnWO4 P 2/c 2/m Ferberite FeWO4 P 2/c 2/m Sanmartinite (Zn,Fe)WO4 P 2/c 2/m Heftetjernite! ScTaO4 P 2/c 2/m
Help on  Strunz Class: Strunz Class: 04.DB.30 04 - OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodate
  04.D - Metal:Oxygen = 1:2 and similar
  04.DB -With medium-sized cations; chains of edge-sharing octahedra
04.DB.30 Ferberite FeWO4 P 2/c 2/m
04.DB.30 Hubnerite MnWO4 P 2/c 2/m
04.DB.30 Krasnoselskite* CoWO4 P 2/c 2/m
04.DB.30 Sanmartinite (Zn,Fe)WO4 P 2/c 2/m
04.DB.30 Wolframoixiolite* (Fe,Mn,Nb)(Nb,W,Ta)O4 Pc m
04.DB.30 Wolframite* (Fe,Mn)WO4 P 2/c 2/m
04.DB.30 Heftetjernite! ScTaO4 P 2/c 2/m

Other Sanmartinite Information

Help on References: References: NAME( AntBidBlaNic4) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Enc. of Minerals,2nd ed.,1990)
Help on See Also: See Also: Links to other databases for Sanmartinite :
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: 04.DB.30





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