Mineralogy Database

Wardsmithite Mineral Data

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General Wardsmithite Information

Help on Chemical  Formula: Chemical Formula: Ca5MgB24O42•30(H2O)
Help on Composition: Composition: Molecular Weight = 1,696.57 gm
   Calcium    11.81 %  Ca   16.53 % CaO
   Magnesium   1.43 %  Mg    2.38 % MgO
   Boron      15.29 %  B    49.24 % B2O3
   Hydrogen    3.56 %  H    31.86 % H2O
   Oxygen     67.90 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca5MgB24O42•30(H2O)
Help on Environment: Environment: Continental borate-bearing evaporite deposits.
Help on IMA Status: IMA Status: Approved IMA 1970
Help on Locality: Locality: Furnace Creek district, Inyo County, and Boron, Kern County, California, USA Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Ward C. Smith (1906-), U. S. Geologist.
Help on Name Pronunciation: Name Pronunciation: Wardsmithite + Pronunciation Say WARDSMITHITE

Wardsmithite Crystallography

Help on Crystal System: Crystal System: Hexagonal Space Group: Unk
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 13.5(1), 12.3(0.62), 6.12(0.55),3.36(0.5), 4.72(0.4), 2.74(0.3), 6.73(0.2), 7.43(0.2),

Physical Properties of Wardsmithite

Help on Cleavage: Cleavage: {0001} Good
Help on Color: Color: Colorless, White.
Help on Density: Density: 1.88
Help on Diaphaneity: Diaphaneity: Transparent
Help on Habit: Habit: Microscopic Crystals - Crystals visible only with microscopes.
Help on Habit: Habit: Nodular - Tuberose forms having irregular protuberances over the surface.
Help on Hardness: Hardness: 2.5 - Finger Nail
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white

Optical Properties of Wardsmithite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.013 (Superior) - where the CI = (1-KPDmeas/KC)
KPDmeas= 0.2569,KC= 0.2536
Ncalc = 1.48
Help on Optical Data: Optical Data: Uniaxial (-), e=1.476, w=1.49, bire=0.0140.

Calculated Properties of Wardsmithite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=1.92 gm/cc
note: Specific Gravity of Wardsmithite =1.88 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEWardsmithite = 1.72 barns/electron
U=PEWardsmithite x rElectron Density= 3.32 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Wardsmithite is Not Radioactive

Wardsmithite Classification

Help on  Dana Class: Dana Class: (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.07)Dana Type
  (26.07.07)Dana Group Wardsmithite Ca5MgB24O42•30(H2O) Unk Hex
Help on  Strunz Class: Strunz Class: 06.HA.25 06 - BORATES
  06.H - Unclassified Borates
  06.HA -Unclassified borates
06.HA.25 Wardsmithite Ca5MgB24O42•30(H2O) Unk Hex

Other Wardsmithite Information

Help on References: References: 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 Wardsmithite :
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: 06.HA.25





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