Goldmanite Mineral Data + Say GOLDMANITE


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General Goldmanite Information
Help on Chemical Formula: Chemical Formula: Ca3(V,Al,Fe+++)2(SiO4)3
Help on Composition: Composition: Molecular Weight = 484.97 gm
   Calcium   24.79 %  Ca   34.69 % CaO
   Aluminum   3.34 %  Al    6.31 % Al2O3
   Vanadium  12.60 %  V    18.54 % V2O3
   Iron       2.30 %  Fe    3.29 % Fe2O3
   Silicon   17.37 %  Si   37.17 % SiO2
   Oxygen    39.59 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3V3+1.2Al0.6Fe3+0.2(SiO4)3
Help on Environment: Environment: Vanadium rich clay found in a metamorphosed uranium-vanadium deposit.
Help on IMA Status: IMA Status: Approved IMA 1964
Help on Locality: Locality: Unnamed prospect pit in the Sandy or South Laguna Mine, Laguna uranium district, Valencia county, New Mexico. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: The name honors Macus I. Goldman, a sedimentary petrologist with the U. S. Geological Survey.
Help on Synonym: Synonym: ICSD 27369
  PDF 16-714
 

Goldmanite Image

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Goldmanite

Comments: Dark gray granular goldmanite grains in sandstone.
Location: Sandy Mine, Laguna, Cibola County, New Mexico, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Goldmanite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 12.011, Z = 8; V = 1,732.76 Den(Calc)= 3.72
Help on Crystal System: Crystal System: Isometric - HexoctahedralH-M Symbol (4/m 3 2/m) Space Group: I a3d
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.688(1), 3.005(0.65), 1.607(0.49),
Help on Forms: Forms:

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Forms: [ 2 1 1]

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Click Here for Large Goldmanite Structure Window Crystal Structure:

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Novak G A , Gibbs G V , American Mineralogist , 56 (1971) p.791-823, The crystal chemistry of the silicate garnets, sample Go

 

Physical Properties of Goldmanite

Help on Cleavage: Cleavage: None
Help on Color: Color: Dark green, Brownish green.
Help on Density: Density: 3.74
Help on Diaphaniety: Diaphaniety: Transparent to Subopaque
Help on Habit: Habit: Crystalline - Fine - Occurs as well-formed fine sized crystals.
Help on Hardness: Hardness: 6-7 - Orthoclase-Quartz
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Goldmanite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.006 (Superior) - where the CI = (1-KPDmeas/KC)
CI calc= 0 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2253,KPDmeas= 0.2241,KC= 0.2253
Help on Optical Data: Optical Data: Isotropic, n=1.821-1.855.
 

Calculated Properties of Goldmanite

Help on Electron Density: Electron Density:

relectron=3.66 gm/cc
note: rGoldmanite =3.72 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.00944
Boson Index = 0.99056
Help on Photoelectric: Photoelectric:

PEGoldmanite = 6.87 barns/electron
U=PEGoldmanite x relectron= 25.15 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Goldmanite is Not Radioactive
 

Goldmanite Classification
Help on Dana Class: Dana Class: 51.4.3b.4 (51)Nesosilicate Insular SiO4 Groups Only
  (51.4)with cations in [6] and >[6] coordination
  (51.4.3b)Garnet group (Ugrandite series)
 
51.4.3b.1 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m
 
51.4.3b.2 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m
 
51.4.3b.3 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
51.4.3b.4 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m
 
51.4.3b.5 Yamatoite? (Mn,Ca)3(V,Al)2(SiO4)3 I a3d 4/m 3 2/m
Help on Strunz Class: Strunz Class: VIII/A.08-140 VIII - Silicates
  VIII/A - Nesosilicates with [SiO4]4-groups, cations of octahedral and cubic orientation [8+6]
  VIII/A.08 - Garnet group, Pyrope - Henritermierite
 
VIII/A.08-10 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-20 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-30 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-40 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-50 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-60 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-70 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-80 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m
 
VIII/A.08-90 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m
 
VIII/A.08-100 Hydrougrandite? (Ca,Mg,Fe)3(Fe,Al)2(SiO4)3-x(OH)4x I a3d 4/m 3 2/m
 
VIII/A.08-110 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-120 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
 
VIII/A.08-125 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
 
VIII/A.08-130 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-138 Yamatoite! (Mn,Ca)3(V,Al)2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-140 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m
 
VIII/A.08-150 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
 
VIII/A.08-160 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 

Other Goldmanite Information
Help on References: References: NAME( MinRec) 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 Goldmanite :
1 -Am. Min. Crystal Structure Database 2 -Athena 3 - Crocoite.com Mineral Locations 4 - EUROmin Project 5 - Franklin Minerals(Dunn) 6 -Google Images 7 -Google Scholar 8 -Handbook of Mineralogy (MinSocAm) 9 -Handbook of Mineralogy (UofA) 10 -MinDAT 11 -MinMax(Deutsch) 12 -MinMax(English) 13 - Mineral and Gemstone Kingdom 14 -Mineralienatlas (Deutsch) 15 -QUT Mineral Atlas 16 - WWW-MINCRYST 17 -École des Mines de Paris

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Goldmanite

Ca3(V,Al,Fe+++)2(SiO4)3
Dana No: 51.4.3b.4 Strunz No: VIII/A.08-140
Locality:

 

Notes:

 
 
   
 
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