Larnite Mineral Data

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



[New Updates] [Gallery 1] [Gallery 2] [Gallery 3] [Rock Shop Gallery]
Serving the mineral collector and educator community since 1970
Over 900,000 mineral specimens in stock
New minerals acquired weekly - Wright's Rock Shop


General Larnite Information

Help on Chemical Formula: Chemical Formula: Ca2SiO4
Help on Composition: Composition: Molecular Weight = 172.24 gm
   Calcium  46.54 %  Ca   65.12 % CaO
   Silicon  16.31 %  Si   34.88 % SiO2
   Oxygen   37.16 %  O
           ______        ______ 
           100.00 %      100.00 % = TOTAL OXIDE
Help on Empirical Formula: Empirical Formula: Ca2(SiO4)
Help on Environment: Environment: Contact metamorphism of limestones.
Help on IMA Status: IMA Status: Valid Species (Pre-IMA) 1929
Help on Locality: Locality: Scawt Hill, near Larne, Co., Antrim, Ireland. Link to MinDat.org Location Data.
Help on Name Origin: Name Origin: Named after its locality.
Help on Name Pronunciation: Name Pronunciation: Larnite Say LARNITE
Help on Synonym: Synonym: ICSD 39006
  PDF 33-302
 

Larnite Image

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

Larnite

Comments: Gray larnite masses in rock.
Location: Scawt Hills, Larne, County Antrim, Northern Ireland. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species
Click Here for Larger Larnite Image in a New Browser Window Images:
Click Here for Larger Larnite Image

Larnite   Paraspurrite

Comments: Violet-tinted gray crystalline pure paraspurrite mass with larnite veinlets.
Location: Near Darwin, Inyo County, California, USA. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Larnite Crystallography
Help on Axial Ratios: Axial Ratios: a:b:c =0.8106:1:1.3727
Help on Cell Dimensions: Cell Dimensions: a = 5.48, b = 6.76, c = 9.28, Z = 4; beta = 94.55° V = 342.69 Den(Calc)= 3.34
Help on Crystal System: Crystal System: Monoclinic - PrismaticH-M Symbol (2/m) Space Group: P 21/n
Help on X Ray Diffraction: X Ray Diffraction: By Intensity(I/Io): 2.795(1), 2.744(0.95), 2.78(0.9),
Click Here for Large Larnite 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


Tsurumi T , Hirano Y , Kato H , Kamiya T , Daimon M , Ceramic Transactions , 40 (1994) p.19-25, Crystal structure and hydration of belite, Locality: synthetic

 

Physical Properties of Larnite

Help on Cleavage: Cleavage: {100} Good
Help on Color: Color: Colorless, Gray.
Help on Density: Density: 3.28
Help on Diaphaneity: Diaphaneity: Transparent to translucent
Help on Habit: Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Help on Habit: Habit: Tabular - Form dimensions are thin in one direction.
Help on Hardness: Hardness: 6 - Orthoclase
Help on Luster: Luster: Vitreous (Glassy)
Help on Streak: Streak: white
 

Optical Properties of Larnite

Help on Gladstone-Dale: Gladstone-Dale: CI meas= -0.045 (Good) - where the CI = (1-KPDmeas/KC)
CI calc= -0.026 (Excellent) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2148,KPDmeas= 0.2187,KC= 0.2093
Ncalc = 1.69 - 1.7
Help on Optical Data: Optical Data: Biaxial (+), a=1.707, b=1.715, g=1.73, bire=0.0230, 2V(Calc)=74, 2V(Meas)=large.
 

Calculated Properties of Larnite

Help on Electron Density: Electron Density: Bulk Density (Electron Density)=3.34 gm/cc
note: Specific Gravity of Larnite =3.34 gm/cc.
Help on Fermion Index: Fermion Index: Fermion Index = 0.0084215622
Boson Index = 0.9915784378
Help on Photoelectric: Photoelectric: PELarnite = 6.32 barns/electron
U=PELarnite x rElectron Density= 21.09 barns/cc.
Help on Radioactivity: Radioactivity: GRapi = 0 (Gamma Ray American Petroleum Institute Units)
Larnite is Not Radioactive
 

Larnite Classification
Help on Dana Class: Dana Class: 51.05.01.01 (51)Nesosilicate Insular SiO4 Groups Only
  (51.05)with cations in >[6] coordination
  (51.05.01)Dana Group
 
51.05.01.01 Larnite Ca2SiO4 P 21/n 2/m
Help on Strunz Class: Strunz Class: 09.AD.05 09 - SILICATES (Germanates)
  09.A - Nesosilicates
  09.AD -Nesosilicates without additional anions;
 
09.AD.05 Larnite Ca2SiO4 P 21/n 2/m
 

Other Larnite 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 Larnite :
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 Larnite using:

Google
 
Web webmineral.com
[ALTAVISTA] [AOL] [bing] [GeoScienceWorld] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Larnite :

B & L Fine Minerals

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

Dakota Matrix

Excalibur Minerals

Exceptional Minerals

Fabre Minerals

John Betts Fine Minerals

Lapis Mineral Journal

Mineral News

UV Tools

Wrights Rock Shop

Translate Larnite Mineral Data :

Ask about Larnite 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 Larnite Specimen Label here :

Larnite

Ca2SiO4
Dana No: 51.05.01.01 Strunz No: 09.AD.05
Locality:

 

Notes: