Schorlomite Mineral Data

Schorlomite Mineral Data
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General Schorlomite Information

Help on Chemical Formula: Chemical Formula: Ca3(Ti,Fe+++,Al)2[(Si,Fe+++,Fe++)O4]3
Help on Composition: Composition: Molecular Weight = 516.73 gm
   Calcium   23.27 %  Ca   32.56 % CaO
   Titanium  15.75 %  Ti   26.28 % TiO2
   Aluminum   0.52 %  Al    0.99 % Al2O3
   Iron      11.89 %  Fe    4.17 % FeO / 12.36 % Fe2O3
   Silicon   11.41 %  Si   24.42 % SiO2
   Oxygen    37.16 %  O
            ______        ______ 
            100.00 %      100.77 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca3Ti1.7Fe3+0.2Al0.13(Si0.7)3(Fe3+0.2)3(Fe2+0.1)3(O4)
Help on Environment: Environment: Alkaline igneous rocks.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1846
Help on Locality: Locality: Magnet Cove, Hot Springs County, Arkansas. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for the mineral schorl and from the Greek "homos," the same, in allusion to its resemblance to schorl.
Help on Name Pronunciation: Name Pronunciation: Schorlomite + Pronunciation Say SCHORLOMITE
Help on Synonym: Synonym: ICSD 76867
  PDF 33-285
 

Schorlomite Image

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Schorlomite

Comments: Lustrous massive black schorlomite.
Location: Magnet Cove, Hot Spring County, Arkansas, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Schorlomite Crystallography
Help on Cell Dimensions: Cell Dimensions: a = 12.128, Z = 8; V = 1,783.89 Den(Calc)= 3.85
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): 2.712(1), 3.035(0.8), 2.475(0.6),
Help on Forms: Forms:

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Forms: ( 2 1 1)

Warning: this large pop-up is very compute intensive and may not work well with some computers.
Click Here for Large Schorlomite Structure Window Crystal Structure:

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Peterson R C , Locock A J , Luth R W , The Canadian Mineralogist , 33 (1995) p.627-631, Positional disorder of oxygen in garnet: the crystal-structure, refinement of schorlomite, Sample: model 1

View Additional jPOWD Structure files for Schorlomite
[1] [2] [3]
 

Physical Properties of Schorlomite

Help on Cleavage: Cleavage: None
Help on Color: Color: Pitch black, Brownish black.
Help on Density: Density: 3.81 - 3.88, Average = 3.84
Help on Diaphaneity: Diaphaneity: Translucent to Subopaque
Help on Fracture: Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).
Help on Habit: Habit: Massive - Uniformly indistinguishable crystals forming large masses.
Help on Hardness: Hardness: 7-7.5 - Quartz-Garnet
Help on Luminescence: Luminescence: Non-fluorescent.
Help on Luster: Luster: Vitreous - Metallic
Help on Streak: Streak: dark brown
 

Optical Properties of Schorlomite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= 0.08 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= 0.081 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2494,KPDmeas= 0.2497,KC= 0.2713
Ncalc = 2.03 - 2.05
Help on Optical Data: Optical Data: Isotropic, n=1.94-1.98.
 

Calculated Properties of Schorlomite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.76 gm/cc
note: Specific Gravity of Schorlomite =3.85 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.02
Boson Index = 0.98
Help on Photoelectric: Photoelectric: PESchorlomite = 9.47 barns/electron
U=PESchorlomite x rElectron Density= 35.60 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Schorlomite is Not Radioactive
 

Schorlomite Classification
Help on Dana Class: Dana Class: 51.04.03c.01 (51)Nesosilicate Insular SiO4 Groups Only
  (51.04)with cations in [6] and >[6] coordination
  (51.04.03c)Garnet group (Schorlomite - Kimzeyite series)
 
51.04.03c.01 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
 
51.04.03c.02 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
 
51.04.03c.03 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
Help on Strunz Class: Strunz Class: 09.AD.25 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AD -Nesosilicates without additional anions;
 
09.AD.25 Almandine Fe3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Calderite (Mn,Ca)3(Fe,Al)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Andradite Ca3Fe2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Goldmanite Ca3(V,Al,Fe)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Hibschite Ca3Al2(SiO4)3-x(OH)4x(x=0.2-1.5) I a3d 4/m 3 2/m
 
09.AD.25 Knorringite Mg3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Grossular Ca3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Henritermierite Ca3(Mn,Al)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 
09.AD.25 Katoite Ca3Al2(SiO4)3-x(OH)4xx=1.5-3 I a3d 4/m 3 2/m
 
09.AD.25 Majorite Mg3(Fe,Al,Si)2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
 
09.AD.25 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
 
09.AD.25 Pyrope Mg3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Spessartine Mn3Al2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
 
09.AD.25 Uvarovite Ca3Cr2(SiO4)3 I a3d 4/m 3 2/m
 
09.AD.25 Wadalite Ca6Al5Si2O16Cl3 I 43d 4 3m
 
09.AD.25 Holtstamite! Ca3(Al,Mn)2(SiO4)2(OH)4 I 41/acd 4/m 2/m 2/m
 

Other Schorlomite Information
Help on References: References: NAME( Dana8) PHYS. PROP.(Dana8) OPTIC PROP.(Dana8)
Help on See Also: See Also: Links to other databases for Schorlomite :
1 - Am. Min. Crystal Structure Database
2 - Athena
3 - EUROmin Project
4 - Ecole des Mines de Paris
5 - Google Images
6 - Google Scholar
7 - Handbook of Mineralogy (MinSocAm)
8 - Handbook of Mineralogy (UofA)
9 - MinDAT
10 - MinMax(Deutsch)
11 - MinMax(English)
12 - Mineral and Gemstone Kingdom
13 - Mineralienatlas (Deutsch)
14 - QUT Mineral Atlas
15 - Ruff.Info
16 - Scandinavian mineral gallery
17 - WWW-MINCRYST

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

Schorlomite

Ca3(Ti,Fe+++,Al)2[(Si,Fe+++,Fe++)O4]3
Dana No: 51.04.03c.01 Strunz No: 09.AD.25
Locality:

 

Notes: