![]() |
Minnesotaite Mineral Data |
General Minnesotaite Information |
|||
![]() |
(Fe++,Mg)3Si4O10(OH)2 | ||
![]() |
Molecular Weight = 458.12 gm | ||
Magnesium 2.65 % Mg 4.40 % MgO | |||
Iron 30.48 % Fe 39.21 % FeO | |||
Silicon 24.52 % Si 52.46 % SiO2 | |||
Hydrogen 0.44 % H 3.93 % H2O | |||
Oxygen 41.91 % O | |||
______ ______ | |||
100.00 % 100.00 % = TOTAL OXIDE | |||
![]() |
Fe2+2.5Mg0.5Si4O10(OH)2 | ||
![]() |
Valid Species (Pre-IMA) 1944 | ||
![]() |
Link to MinDat.org Location Data. | ||
![]() |
Named after its occurrence in Minnesota, USA. | ||
![]() |
Minnesotaite + Pronunciation ![]() |
||
![]() |
Iron Talc | ||
Minnesotaite Image | |||
![]() |
|
||
Minnesotaite Crystallography |
|||
![]() |
a:b:c =0.5969:1:1.0217 | ||
![]() |
a = 5.623, b = 9.419, c = 9.624, Z = 2; alpha = 85.21°, beta = 95.64°, gamma = 90° V = 505.48 Den(Calc)= 3.01 | ||
![]() |
Triclinic - Pinacoidal H-M Symbol ( 1) Space Group: C1 | ||
![]() |
By Intensity(I/Io): 9.54(1), 2.53(0.7), 3.18(0.5), | ||
Physical Properties of Minnesotaite |
|||
![]() |
{001} Perfect | ||
![]() |
Pale green. | ||
![]() |
3.01 | ||
![]() |
Translucent | ||
![]() |
Uneven - Flat surfaces (not cleavage) fractured in an uneven pattern. | ||
![]() |
Foliated - Two dimensional platy forms. | ||
![]() |
Radial - Crystals radiate from a center without producing stellar forms (e.g. stibnite) | ||
![]() |
1.5-2 - Talc-Gypsum | ||
![]() |
Pearly | ||
![]() |
white | ||
Optical Properties of Minnesotaite |
|||
![]() |
CI meas= 0.028 (Excellent) - where the CI = (1-KPDmeas/KC) CI calc= 0.028 (Excellent) - where the CI = (1-KPDcalc/KC) KPDcalc= 0.1993,KPDmeas= 0.1993,KC= 0.205 Ncalc = 1.62 |
||
![]() |
Biaxial (-), a=1.578-1.583, b=1.578-1.622, g=1.615-1.623, bire=0.0370-0.0400, 2V(Calc)=0-16, 2V(Meas)=4. | ||
![]() |
colorless or pale yellow. | ||
![]() |
colorless or pale green. | ||
![]() |
colorless or pale green. | ||
Calculated Properties of Minnesotaite |
|||
![]() |
Bulk Density (Electron Density)=2.96 gm/cc note: Specific Gravity of Minnesotaite =3.01 gm/cc. |
||
![]() |
Fermion Index = 0.02 Boson Index = 0.98 |
||
![]() |
PEMinnesotaite = 10.04 barns/electron U=PEMinnesotaite x rElectron Density= 29.68 barns/cc. |
||
![]() |
GRapi = 0 (Gamma Ray American Petroleum Institute Units) Minnesotaite is Not Radioactive |
||
Minnesotaite Classification |
|||
![]() |
71.02.01.05 (71)Phyllosilicate Sheets of Six-Membered Rings | ||
(71.02)with 2:1 Layers | |||
(71.02.01)Pyrophyllite-talc group | |||
![]() |
09.EC.05 09 - SILICATES (Germanates) | ||
09.E - Phyllosilicates | |||
09.EC -Phyllosilicates with mica sheets, composed of tetrahedral and octahedral nets | |||
Other Minnesotaite Information |
|||
![]() |
NAME( Heinrich65) PHYS. PROP.(Enc. of Minerals,2nd ed.,1990) OPTIC PROP.(Heinrich65) | ||
![]() |
Links to other databases for Minnesotaite : 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 Search for Minnesotaite using: Visit our Advertisers for Minnesotaite : Ask about Minnesotaite here : Print or Cut-and-Paste your Minnesotaite Specimen Label here :
|
||
Dakota Matrix
Excalibur Minerals
Exceptional Minerals
Hudson Insitute
John Betts Fine Minerals
Mc Dougall Minerals
Mineral News
Rock and Mineral Shows
Weinrich Minerals, Inc.