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Glaucochroite Mineral Data

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General Glaucochroite Information

Help on Chemical  Formula: Chemical Formula: CaMnSiO4
Help on Composition: Composition: Molecular Weight = 187.10 gm
   Calcium    21.42 %  Ca   29.97 % CaO
   Manganese  29.36 %  Mn   37.91 % MnO
   Silicon    15.01 %  Si   32.11 % SiO2
   Oxygen     34.21 %  O
             ______        ______ 
             100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: CaMn2+SiO4
Help on Environment: Environment: Metamorphosed limestone containing manganese minerals.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1899
Help on Locality: Locality: Franklin Furnace, Sussex Co., New Jersey, USA. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: From the Greek for blue green and color, in allusion to its color.
Help on Name Pronunciation: Name Pronunciation: Glaucochroite + Pronunciation Say GLAUCOCHROITE
Help on Synonym: Synonym: ICSD 100650
  PDF 14-376
 

Glaucochroite Image

Click Here for Larger   Image in a New Browser Window Images:
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  Glaucochroite   Zincite   Willemite

Comments: Pinkish gray crystalline glaucochroite intermixed with pale green willemite, with dark red zincite and white calcite.
Location: Franklin, Sussex County, New Jersey, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Glaucochroite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =0.4416:1:0.5834
Help on Cell Dimensions: Cell Dimensions: a = 4.92, b = 11.14, c = 6.5, Z = 4; V = 356.26 Den(Calc)= 3.49
Help on Crystal System: Crystal System: Orthorhombic - Dipyramidal H-M Symbol (2/m 2/m 2/m) Space Group: Pbnm
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 1.85(1), 2.63(0.8), 2.69(0.8),
 

Physical Properties of Glaucochroite

Help on Cleavage: Cleavage: {001} Indistinct
Help on Color: Color: Green, White, Pinkish.
Help on Density: Density: 3.4
Help on Diaphaneity: Diaphaneity: Translucent
Help on Fracture: Fracture: Brittle - Generally displayed by glasses and most non-metallic minerals.
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous (Glassy)
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Glaucochroite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.024 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.003 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2039,KPDmeas= 0.2093,KC= 0.2044
Ncalc = 1.7 - 1.71
Help on Optical Data: Optical Data: Biaxial (-), a=1.679-1.686, b=1.716-1.723, g=1.729-1.736, bire=0.0500, 2V(Calc)=60, 2V(Meas)=61. Dispersion medium, r > v.
 

Calculated Properties of Glaucochroite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.39 gm/cc
note: Specific Gravity of Glaucochroite =3.49 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0074635133
Boson Index = 0.9925364867
Help on Photoelectric: Photoelectric: PEGlaucochroite = 10.73 barns/electron
U=PEGlaucochroite x rElectron Density= 36.42 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Glaucochroite is Not Radioactive
 

Glaucochroite Classification

Help on  Dana Class: Dana Class: 51.03.02.03 (51)Nesosilicate Insular SiO4 Groups Only
  (51.03)with all cations in octahedral [6] coordination
  (51.03.02)Monticellite - Kirschsteinite series
 
51.03.02.01 Monticellite CaMgSiO4 P nma 2/m 2/m 2/m
 
51.03.02.02 Kirschsteinite CaFeSiO4 Pbmn 2/m 2/m 2/m
 
51.03.02.03 Glaucochroite CaMnSiO4 Pbnm 2/m 2/m 2/m
Help on  Strunz Class: Strunz Class: 09.AC.05 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AC -Nesosilicates without additional anions;
 
09.AC.05 Forsterite Mg2SiO4 Pbnm 2/m 2/m 2/m
 
09.AC.05 Glaucochroite CaMnSiO4 Pbnm 2/m 2/m 2/m
 
09.AC.05 Fayalite Fe2SiO4 Pbnm 2/m 2/m 2/m
 
09.AC.05 Olivine* (Mg,Fe)2SiO4 Pbnm 2/m 2/m 2/m
 
09.AC.05 Kirschsteinite CaFeSiO4 Pbmn 2/m 2/m 2/m
 
09.AC.05 Laihunite FeFe2(SiO4)2 P 21/b 2/m
 
09.AC.05 Liebenbergite (Ni,Mg)2SiO4 Pbnm 2/m 2/m 2/m
 
09.AC.05 Tephroite Mn2SiO4 P nma 2/m 2/m 2/m
 

Other Glaucochroite Information

Help on References: References: NAME( Ford32) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)
Help on See Also: See Also: Links to other databases for Glaucochroite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Franklin Minerals(Dunn)
6 - Franklin Minerals(Palache)
7 - GeoScienceWorld
8 - Google Images
9 - Google Scholar
10 - Handbook of Mineralogy (MinSocAm)
11 - Handbook of Mineralogy (UofA)
12 - MinDAT
13 - Mineralienatlas (Deutsch)
14 - Online Mineral Museum
15 - QUT Mineral Atlas
16 - Ruff.Info
17 - WWW-MINCRYST

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Print or Cut-and-Paste your Glaucochroite Specimen Label here :

Glaucochroite

CaMnSiO4
Dana No: 51.03.02.03 Strunz No: 09.AC.05
Locality:

 

Notes:

 

 
   
 


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