Foshagite  Mineral Data

Foshagite Mineral Data

Search Webmineral :
   
Home Crystal jmol jPOWD Chem X Ray Dana Strunz Properties A to Z Images Share
      News Help About

Advertisment
Your premier supplier of quality mineral specimens from Southern Africa and the world at large

General Foshagite Information

Help on Chemical  Formula: Chemical Formula: Ca4Si3O9(OH)2
Help on Composition: Composition: Molecular Weight = 422.58 gm
   Calcium   37.94 %  Ca   53.08 % CaO
   Silicon   19.94 %  Si   42.66 % SiO2
   Hydrogen   0.48 %  H     4.26 % H2O
   Oxygen    41.65 %  O
            ______        ______ 
            100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca4Si3O9(OH)2
Help on Environment: Environment: Metamorphosed limestone.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1925
Help on Locality: Locality: Crestmore quarry, 5 miles NW of Riverside, Riverside Co. California. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named for William Fredrick Foshag (1894-1956), mineralogist and former curator at U. S. National Museum.
Help on Name Pronunciation: Name Pronunciation: Foshagite + Pronunciation Say FOSHAGITE
Help on Synonym: Synonym: ICSD 25818
  PDF 29-377
 

Foshagite Image

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

Foshagite

Comments: Tan to gray fibrous to columnar aggregate of foshagite.
Location: Crestmore Quarry, Riverside County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Foshagite Crystallography

Help on Axial Ratios: Axial Ratios: a:b:c =2.8423:1:1.9213
Help on Cell Dimensions: Cell Dimensions: a = 10.406, b = 3.661, c = 7.034, Z = 1; beta = 107.07° V = 256.16 Den(Calc)= 2.74
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/m
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.953(1), 3.36(0.25), 4.96(0.25),
Click Here for Large Foshagite 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


Gard J A , Taylor H F W , Acta Crystallographica , 13 (1960) p.785-793, The crystal structure of foshagite, Locality: Crestmore, California, USA

 

Physical Properties of Foshagite

Help on Cleavage: Cleavage: {001} Distinct
Help on Color: Color: Snow white.
Help on Density: Density: 2.36
Help on Diaphaneity: Diaphaneity: Translucent
Help on Habit: Habit: Acicular - Occurs as needle-like crystals.
Help on Habit: Habit: Fibrous - Crystals made up of fibers.
Help on Luminescence: Luminescence: Fluorescent, Short UV=yellowish to blue white, Long UV=butter yellow.
Help on Luster: Luster: Silky
Help on Magnetism: Magnetism: Nonmagnetic
Help on Streak: Streak: white
 

Optical Properties of Foshagite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.175 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.012 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2173,KPDmeas= 0.2523,KC= 0.2147
Ncalc = 1.51 - 1.59
Help on Optical Data: Optical Data: Biaxial (+), a=1.594, b=1.594, g=1.598, bire=0.0040
 

Calculated Properties of Foshagite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=2.75 gm/cc
note: Specific Gravity of Foshagite =2.74 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.01
Boson Index = 0.99
Help on Photoelectric: Photoelectric: PEFoshagite = 5.40 barns/electron
U=PEFoshagite x rElectron Density= 14.85 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Foshagite is Not Radioactive
 

Foshagite Classification

Help on  Dana Class: Dana Class: 65.02.02.01 (65)Inosilicate Single-Width Unbranched Chains, W=1
  (65.02)with chains P=3
  (65.02.02)Dana Group
 
65.02.02.01 Foshagite Ca4Si3O9(OH)2 P 21/m 2/m
Help on  Strunz Class: Strunz Class: 09.DG.15 09 - SILICATES (Germanates)
  09.D - Inosilicates* Structural terminology according to Liebau (1985)
  09.DG -Inosilicates with 3-periodic single and multiple chains
 
09.DG.15 Foshagite Ca4Si3O9(OH)2 P 21/m 2/m
 

Other Foshagite Information

Help on References: References: NAME( Dana8) PHYS. PROP.(Collectors Book of Fluorescent Minerals) OPTIC PROP.(Ford32)
Help on See Also: See Also: Links to other databases for Foshagite :
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

Search for Foshagite using:

Google
 
Web webmineral.com
[AOL] [Bing] [Dog Pile] [GeoScienceWorld] [HotBot] [Ixquick] [Lycos] [MAMMA] [Scirus] [Teoma] [WebCrawler] [Wikipedia] [YAHOO]

Visit our Advertisers for Foshagite :

A Bijoux Google Search for Foshagite
Adam's Minerals Google Search for Foshagite
Cape Minerals Google Search for Foshagite
Dakota Matrix Minerals Google Search for Foshagite
Excalibur Mineral Corp. Google Search for Foshagite
Exceptional Minerals Google Search for Foshagite
John Betts Fine Minerals Search for Foshagite
McDougall Minerals Google Search for Foshagite
Mineral News Website Link
Rock and Mineral Shows Google Search for Foshagite
Weinrich Minerals, Inc. Google Search for Foshagite

Ask about Foshagite 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 Espaņol

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

Foshagite

Ca4Si3O9(OH)2
Dana No: 65.02.02.01 Strunz No: 09.DG.15
Locality:

 

Notes: