Gowerite Mineral Data

Gowerite Mineral Data
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General Gowerite Information

Help on Chemical Formula: Chemical Formula: CaB6O10•5(H2O)
Help on Composition: Composition: Molecular Weight = 355.01 gm
   Calcium   11.29 %  Ca   15.80 % CaO
   Boron     18.27 %  B    58.83 % B2O3
   Hydrogen   2.84 %  H    25.37 % H2O
   Oxygen    67.60 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaB6O10•5(H2O)
Help on Environment: Environment: Lacusterine limestone deposits containing borate minerals.
Help on IMA Status: IMA Status: Approved IMA 1959
Help on Locality: Locality: Mott open cut, head of 20 mule Team Canyon, Death Valley, Inyo Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for Harrison Preston Gower (1890-1967), Mining Manager, U.S. Borax and Chemical Company, USA.
Help on Name Pronunciation: Name Pronunciation: Gowerite Say GOWERITE
Help on Synonym: Synonym: ICSD 22047
  PDF 12-528
 

Gowerite Image

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Gowerite

Comments: Coatings of acicular radiating crystal clusters of gowerite.
Location: Furnace Creek, Death Valley, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Gowerite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.6725:1:0.401
Help on Cell Dimensions: Cell Dimensions: a = 11.03, b = 16.4, c = 6.577, Z = 4; beta = 90.933° V = 1,189.57 Den(Calc)= 1.98
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n,P 21/a
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 8.2(1), 3.19(0.45), 9.2(0.25),
Click Here for Large Gowerite Structure Window Crystal Structure:

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Konnert J A , Clark J R , Christ C L , American Mineralogist , 57 (1972) p.381-396, Gowerite, CaB5O8(OH).B(OH)3.3H2O: Crystal structure and comparison with, related borates

 

Physical Properties of Gowerite

Help on Cleavage: Cleavage: {100} Indistinct, {001} Distinct
Help on Color: Color: Colorless, White.
Help on Density: Density: 2
Help on Diaphaneity: Diaphaneity: Transparent
Help on Fracture: Fracture: Brittle - Uneven - Very brittle fracture producing uneven fragments.
Help on Hardness: Hardness: 3 - Calcite
Help on Luminescence: Luminescence: Fluorescent, Short UV=weak blue white, Long UV=weak blue white.
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Gowerite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.04 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.051 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2584,KPDmeas= 0.2558,KC= 0.2459
Ncalc = 1.49
Help on Optical Data: Optical Data: Biaxial (+), a=1.484, b=1.501, g=1.55, bire=0.0660
Help on Pleochroism (x): Pleochroism (x): colorless.
Help on Pleochroism (y): Pleochroism (y): colorless.
Help on Pleochroism (z): Pleochroism (z): colorless.
 

Calculated Properties of Gowerite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.03 gm/cc
note: Specific Gravity of Gowerite =2.00 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.03
Boson Index = 0.97
Help on Photoelectric: Photoelectric: PEGowerite = 1.65 barns/electron
U=PEGowerite x rElectron Density= 3.35 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Gowerite is Not Radioactive
 

Gowerite Classification
Help on Dana Class: Dana Class: 26.05.08.01 (26)Hydrated Borates Containing Hydroxyl or Halogen
  (26.05)Dana Type
  (26.05.08)Dana Group
 
26.05.08.01 Gowerite CaB6O10•5(H2O) P 21/n,P 21/a 2/m
Help on Strunz Class: Strunz Class: 06.EC.10 06 - BORATES
  06.E - Pentaborates
  06.EC -Phyllo-pentaborates
 
06.EC.10 Gowerite CaB6O10•5(H2O) P 21/n,P 21/a 2/m
 

Other Gowerite Information
Help on References: References: NAME( AntBidBlaNic5) 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 Gowerite :
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
15 - WWW-MINCRYST

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Ask about Gowerite here :
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Print or Cut-and-Paste your Gowerite Specimen Label here :

Gowerite

CaB6O10•5(H2O)
Dana No: 26.05.08.01 Strunz No: 06.EC.10
Locality:

 

Notes: