Jasmundite Mineral Data

Jasmundite Mineral Data +

General Jasmundite Information

Chemical Formula:

Ca11(SiO4)4O2S

Composition:

Molecular Weight = 873.26 gm

Calcium 50.48 % Ca 70.64 % CaO

Silicon 12.86 % Si 27.52 % SiO₂

Sulfur 3.67 % S 3.67 % S^2-

- % S -1.83 % -O=S

Oxygen 32.98 % O

______ ______

100.00 % 100.00 % = TOTAL OXIDE

Empirical Formula:

Ca₁₁(SiO₄)₄O₂S

IMA Status:

Approved IMA 1981

Locality:

Link to MinDat.org Location Data.

Synonym:

ICSD 63412

PDF 33-296

Search for Jasmundite Images

Images:

Image not yet available on Webmineral.com

Try searching images.google.com or Mindat Picture Gallary for mineral pictures. Caution: The images retrieved may not be appropriate.

Jasmundite Crystallography

Axial Ratios:

a:c = 1:0.84246

Cell Dimensions:

a = 10.461, c = 8.813, Z = 2; V = 964.43 Den(Calc)= 3.01

Crystal System:

Tetragonal - ScalenohedralH-M Symbol (4 2m) Space Group: I 42m

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

By Intensity(I/I_o): 2.832(1), 3.242(0.42), 2.615(0.35),

Physical Properties of Jasmundite

Cleavage:

None

Color:

Brownish green, Greenish brown, Dark brown.

Density:

3.03

Fracture:

Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz).

Hardness:

5 - Apatite

Luster:

Resinous

Streak:

white

Optical Properties of Jasmundite

Gladstone-Dale:

CI meas= -0.158 (Poor) - where the CI = (1-KPDmeas/KC)
CI calc= -0.166 (Poor) - where the CI = (1-KPDcalc/KC)
KPDcalc= 0.2397,KPDmeas= 0.2381,KC= 0.2056

Optical Data:

Uniaxial (+), w=1.715, e=1.728, bire=0.0130.

Calculated Properties of Jasmundite

Electron Density:

r_electron=3.03 gm/cc
note: r_Jasmundite=3.03 gm/cc.

Fermion Index

Fermion Index = 0.00712
Boson Index = 0.99288

Photoelectric:

PE_Jasmundite= 6.86 barns/electron
U=PE_Jasmundite x r_electron= 20.77 barns/cc.

Radioactivity:

GRapi = 0 (Gamma Ray American Petroleum Institute Units)

Jasmundite is Not Radioactive

Jasmundite Classification

Dana Class:

52.4.7.4 (52)Nesosilicate Insular SiO4 Groups and O, OH, F, and H2O

(52.4)with cations in [6] and/or > [6] coordination

(52.4.7)Afwillite and related species

52.4.7.1 Afwillite Ca3Si2O4(OH)6 P 2₁ 2

52.4.7.2 Bultfonteinite Ca2SiO2(OH,F)4 P1 1

52.4.7.3 Hatrurite Ca3SiO5 R 3m 3m

52.4.7.4 Jasmundite Ca11(SiO4)4O2S I 42m 4 2m

Strunz Class:

VIII/B.05-10 VIII - Silicates

VIII/B - Nesosubsilicates, with anions unfamiliar to tetraheders, cations of octahedral and tetrahedral orientation [4/6]

VIII/B.05 - Jasmundite series

VIII/B.05-05 Rondorfite! Ca8Mg(SiO4)4Cl2 F d3 2/m 3

VIII/B.05-10 Jasmundite Ca11(SiO4)4O2S I 42m 4 2m

Other Jasmundite Information

References:

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

Search for Jasmundite using:

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

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

Translate Jasmundite Mineral Data :

Ask about Jasmundite 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 Jasmundite Specimen Label here :

Jasmundite

Ca11(SiO4)4O2S
Dana No: 52.4.7.4 Strunz No: VIII/B.05-10
Locality:

Notes: