Schorlomite Mineral Data + Say SCHORLOMITE


[Content and History] [Recent Issues] [Back Issues] [Subscriptions] [Contacts]
See Also: [Diamond Crystals] [Excalibur Minerals] [Hudson Institute] [Minerals on CDROM]
Mineral News was founded some twenty years ago and has developed a following of
avid mineral collectors seeking timely information about new finds and other items
of interest to the collector community. Articles are solicited from collector and scientific authors.

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 Synonym: Synonym: ICSD 76867
  PDF 33-285
 

Schorlomite Image

Click Here for Larger Schorlomite Image in a New Browser Window Images:
Click Here for Larger Schorlomite Image

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:

Mouse
Dbl Clk - Start-Stop Rotation
RMB - Cycle Display Modes
Drag1 - Manipulate Crystal
Drag2 - Resize
Keyboard
S - Stereo
I - Indicies
<space> - Start-Stop Rotation
F - Fit to Screen
M - Menu
Help on Above

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:

Mouse
drag1 - LMB Manipulate Structure
drag2 - RMB Resize/Rotate
Keyboard
S - Stereo Pair on/off
H - Help Screen
I - Data Info
A - Atoms On/Off
P - Polyhedra On/Off
B - Bonds On/Off
 Help on Above


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 Diaphaniety: Diaphaniety: 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= 0.052 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= 0.053 (Good) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2494,KPDmeas= 0.2497,KC= 0.2634
Help on Optical Data: Optical Data: Isotropic, n=1.94-1.98.
 

Calculated Properties of Schorlomite

Help on Electron Density: Electron Density:

relectron=3.76 gm/cc
note: rSchorlomite =3.85 gm/cc.
Help on Fermion Index Fermion Index Fermion Index = 0.02871
Boson Index = 0.97129
Help on Photoelectric: Photoelectric:

PESchorlomite = 9.47 barns/electron
U=PESchorlomite x relectron= 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: 51.4.3c.1 (51)Nesosilicate Insular SiO4 Groups Only
  (51.4)with cations in [6] and >[6] coordination
  (51.4.3c)Garnet group (Schorlomite - Kimzeyite series)
 
51.4.3c.1 Schorlomite Ca3(Ti,Fe,Al)2[(Si,Fe,Fe)O4]3 I a3d 4/m 3 2/m
 
51.4.3c.2 Kimzeyite Ca3(Zr,Ti)2(Si,Al,Fe)3O12 I a3d 4/m 3 2/m
 
51.4.3c.3 Morimotoite Ca3TiFeSi3O12 I a3d 4/m 3 2/m
Help on Strunz Class: Strunz Class: VIII/A.08-120 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 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 - Crocoite.com Mineral Locations 4 - EUROmin Project 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 - Scandinavian mineral gallery 16 - WWW-MINCRYST 17 -École des Mines de Paris

Search for Schorlomite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [About.com] [All-The-Web] [HotBot] [Ixquick] [LookSmart] [MAMMA] [MSN.COM] [Netscape] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Schorlomite :
AA Mineral Specimens
B and L Minerals
Dan Weinrich Fine Minerals
Dan Weinrich Auctions
e-Rocks Auctions
Excalibur Minerals
Exceptional Minerals
Fabre Minerals
Greenside Minerals
John Betts Fine Minerals
Masons Minerals
Minernet.it
Mineral News
Mineral of the Month Club
MineralsWeb Fine Minerals
Rockshop.cz Kalat Fine Minerals
T G Fine Minerals
Wrights Rock Shop

Translate Schorlomite Mineral Data :

Ask about Schorlomite here :
Ask-A-Mineralogist from the Mineralogical Society of America
Mindat.org's Discussion Groups
Original Rockhounds Discussion Group
Rockhounds Discussion Group on Yahoo Groups
Mineral Discussion Forum from Fabre Minerals - also available in Español

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

Schorlomite

Ca3(Ti,Fe+++,Al)2[(Si,Fe+++,Fe++)O4]3
Dana No: 51.4.3c.1 Strunz No: VIII/A.08-120
Locality:

 

Notes:

 
 
   
 
Go To Webmineral Home Crystallography X-Ray D-Spacing Table Chemical Composition
Dana Classification Strunz Classification Table of Mineral Properties Alphabetical Listing of Minerals
Search Webmineral Photo Gallery of Mineral Images Help Files Links