Kirschsteinite Mineral Data

Kirschsteinite Mineral Data +

[Newest Minerals] [Minerals for Sale] [Educational Articles] [About Us] [Image Gallery]
John Betts - Fine Minerals
Classic minerals, out-of-print books & magazines, plus informative articles for collectors

General Kirschsteinite Information

Chemical Formula:

CaFe++SiO4

Composition:

Molecular Weight = 188.01 gm

Calcium 21.32 % Ca 29.83 % CaO

Iron 29.70 % Fe 38.21 % FeO

Silicon 14.94 % Si 31.96 % SiO₂

Oxygen 34.04 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

CaFe²⁺(SiO₄)

IMA Status:

Valid Species (Pre-IMA) 1957

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 83824

PDF 34-98

Kirschsteinite Image

Images:

Kirschsteinite

Comments: Grayish green crystalline massive kirschsteinite.
Location: Mazarron, Murcia, Spain. Scale: See Photo.
© Jeff Weissman / Photographic Guide to Mineral Species

Kirschsteinite Crystallography

Axial Ratios:

a:b:c =0.4367:1:0.5774

Cell Dimensions:

a = 4.877, b = 11.166, c = 6.448, Z = 4; V = 351.14 Den(Calc)= 3.56

Crystal System:

Orthorhombic - DipyramidalH-M Symbol (2/m 2/m 2/m) Space Group: Pbmn

$Help on X Ray Diffraction:$ X Ray Diffraction:

By Intensity(I/I_o): 2.949(1), 2.68(0.85), 2.604(0.8),

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

Folco L , Mellini M , European Journal of Mineralogy , 9 (1997) p.969-973, Crystal chemistry of meteoritic kirschsteinite, Sample: KIR1

View Additional jPOWD Structure files for Kirschsteinite
[1]

Physical Properties of Kirschsteinite

Color:

Colorless, Light green.

Density:

3.434

Diaphaniety:

Transparent to Translucent

Hardness:

5.5 - Knife Blade

Luster:

Vitreous (Glassy)

Streak:

white

Optical Properties of Kirschsteinite

Gladstone-Dale:

CI meas= -0.023 (Excellent) - where the CI = (1-KPDmeas/KC)
CI calc= 0.013 (Superior) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.1983,KPDmeas= 0.2056,KC= 0.201

Optical Data:

Biaxial (-), a=1.674-1.693, b=1.694-1.734, g=1.706-1.735, bire=0.0320-0.0420, 2V(Calc)=16-74, 2V(Meas)=50.

Pleochroism (x):

colorless.

Pleochroism (y):

colorless.

Pleochroism (z):

colorless.

Calculated Properties of Kirschsteinite

Electron Density:

r_electron=3.48 gm/cc
note: r_{Kirschsteinite}=3.56 gm/cc.

Fermion Index

Fermion Index = 0.01372
Boson Index = 0.98628

Photoelectric:

PE_{Kirschsteinite}= 12.06 barns/electron
U=PE_{Kirschsteinite} x r_electron= 42.01 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Kirschsteinite is Not Radioactive

Kirschsteinite Classification

Dana Class:

51.3.2.2 (51)Nesosilicate Insular SiO4 Groups Only

(51.3)with all cations in octahedral [6] coordination

(51.3.2)Monticellite - Kirschsteinite series

51.3.2.1 Monticellite CaMgSiO4 P nma 2/m 2/m 2/m

51.3.2.2 Kirschsteinite CaFeSiO4 Pbmn 2/m 2/m 2/m

51.3.2.3 Glaucochroite CaMnSiO4 Pbnm 2/m 2/m 2/m

Strunz Class:

VIII/A.05-20 VIII - Silicates

VIII/A - Nesosilicates with [SiO4]4-groups, cations of octahedral orientation [6]

VIII/A.05 - Monticellite - Glaucochroite series

VIII/A.05-10 Monticellite CaMgSiO4 P nma 2/m 2/m 2/m

VIII/A.05-20 Kirschsteinite CaFeSiO4 Pbmn 2/m 2/m 2/m

VIII/A.05-30 Glaucochroite CaMnSiO4 Pbnm 2/m 2/m 2/m

Other Kirschsteinite Information

References:

PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65)

Search for Kirschsteinite using:

[ALTAVISTA] [AOL] [All-The-Web] [HotBot] [Ixquick] [MAMMA] [MSN.COM] [Netscape] [Scirus] [Teoma] [Wikipedia] [YAHOO]

Visit our Advertisers for Kirschsteinite :

AA Mineral Specimens

B & L Fine Minerals

Crystal Vaults

Dan Weinrich Fine Minerals

Dan Weinrich Auctions

John Betts Fine Minerals

Mason's Minerals

Mineral News

Mineral of the Month Club

MineralsWeb Fine Minerals

Rockshop.cz

T G Fine Minerals

Wrights Rock Shop

Translate Kirschsteinite Mineral Data :

Ask about Kirschsteinite 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 Kirschsteinite Specimen Label here :

Kirschsteinite

CaFe++SiO4
Dana No: 51.3.2.2 Strunz No: VIII/A.05-20
Locality:

Notes: