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Minnesotaite

Collectors Summary

Color blass grün
Streak color weiß
Lustre Fettglanz, Wachsglanz, matt
Hardness (Mohs) 2.75
Cleavages vollkommen {001} glimmerartig
Crystal System triklin, P1

Chemism

Chem­ical formula

Fe2+3Si4O10(OH)2

Chem­ical com­po­si­tion

Eisen, Silicium, Sauerstoff, Wasserstoff

Unit weight: 473.886774 u; Number of atoms in the formula: 21

Info

Empirical formula:

Fe3Si4O10(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

0.43

2

9.52

1.0079470

2.0158940

Oxygen

O

40.51

12

57.14

15.9994300

191.9931600

Silicon

Si

23.71

4

19.05

28.0855300

112.3421200

Iron

Fe

35.35

3

14.29

55.8452000

167.5356000

Anal­y­sis wt%

SiO2 : 51.79, Al2O3 : 1.46, Fe2O3 : 0.61, FeO : 35.65, MnO : 0.78, MgO : 3.21, K2O : 0.44, H2O : 5.06 (Ref: American Mineralogist 65)

Strunz 9th edi­tion incl. updates

9.EC.05

9: Silikate (Germanate)
E: Schichtsilikate (Phyllosilikate)
C: Schichtsilikate (Phyllosilikate) mit Glimmer Tafeln, zusammengesetzt aus tetrahedralen oder octahedralen Netzen
05:Talk-Gruppe

Lapis Clas­sifica­tion

VIII/H.09-050

VIII: SILIKATE
H: Schichtsilikate
9: Glimmerartige Schicht-silikate mit Baugruppen [Si4O10] 4- und verwandte Strukturen

Clas­sifica­tion by Hölzel

9.EF.130

9: SILICATES
E: Phyllosilicates
F: Other Micas without H2O
1: Triclinic Stilpnomelane-Group

IMA sta­tus

Erstbeschreibung vor CNMNC-Gründung (1959), als Mineral meist anerkannt

Min­eral sta­tus

anerkanntes Mineral

Optical Properties

Color

blass grün

Streak color

weiß

Diaphane­ity (Trans­parency)

durchscheinend

Lus­tre

Fettglanz, Wachsglanz, matt

max. Birefrin­gence

0.040

Birefringence chart\! Minnesotaite title=Birefringence chart Minnesotaite

Michel-Levy Color Chart viewed according to the maximum birefringence (at 30μm). Mineral color is not taken into account. Click on the image to enlarge or change thickness.

RI value α / ω / n

1.592

RI value β

1.631

RI value γ / ε

1.632

Ri mean

1.618

2V angle

Biaxial (-) klein

Pleochro­ism

X = blassgrün, Z = farblos zu blass grünlichgelb

Crystallography

Crystal Sys­tem

triklin

Class (H-M)

1

Space Group number

2

Space Group

P1

Cell param­e­ters a (Å)

5.623

Cell param­e­ters b (Å)

9.419

Cell param­e­ters c (Å)

9.624

Cell param­e­ters a/b or c/a

0.597

Cell param­e­ters c/b

1.022

Cell param­e­ters α

85.21°

Cell param­e­ters β

95.64°

Cell param­e­ters γ

90°

Z

2

Volumne (ų)

505.46

X-Ray Pow­der Diffrac­tion

9.54(100),
4.78(20),
3.18(50),
2.759(20),
2.655(20),
2.53(70),
2.405(20),
2.212(20)

XRD chart Minnesotaite

Calculated from d-spacing and intensity at 0.1541838 nm (Cu)

Physical Properties

Hard­ness (Mohs)

2.75

VHN (Hard­ness Vick­ers)

68 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.01 (gemessen) 2.97 (berechnet)

3.113 ( ρ calc. Mineralienatlas )

Cleav­ages

vollkommen {001} glimmerartig

Preface

Author (Name, Year)

Gruner, 1944

References

Handbook of Mineralogy (Anthony et al.), 2 (1995), 544

American Mineralogist 29 (1944), 363-372.

Canadian Mineralogist 24 (1986), 479-497

Related minerals "Strunz Classification" (9. Edition) [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Talc

Mg3Si4O10(OH)2

monoklin : 2/m : C2/c

9.EC.05

'Talc-1A' (Pol.v. Talc)

Mg3Si4O10(OH)2

triklin : 1 : P1

9.EC.05

Willemseite

(Ni,Mg)3Si4O10(OH)2

monoklin : m : Cc

9.EC.05

Minnesotaite

Fe2+3Si4O10(OH)2

triklin : 1 : P1

9.EC.05

Related minerals "Lapis Classification" [Mineral | Chemical formula | Crystal system : Class (H-M) : Space Group | Indenture number]

Pyrophyllite

Al2Si4O10(OH)2

monoklin : 2/m : C2/c

VIII/H.09-010

Ferripyrophyllite

Fe3+Si2O5(OH)

monoklin : 2/m : C2/c

VIII/H.09-020

Macaulayite

(Fe3+,Al)24Si4O43(OH)2

VIII/H.09-030

Talc

Mg3Si4O10(OH)2

monoklin : 2/m : C2/c

VIII/H.09-040

Minnesotaite

Fe2+3Si4O10(OH)2

triklin : 1 : P1

VIII/H.09-050

Willemseite

(Ni,Mg)3Si4O10(OH)2

monoklin : m : Cc

VIII/H.09-060

Kegelite

Pb4Al2Si4O10(SO4)(CO3)2(OH)4

monoklin : 2/m, 2, m : A2/m, A2, Am

VIII/H.09-070

Related minerals "Hoelzel Classification" [Mineral | Chemical formula : Crystal system : Class (H-M) | Space Group | Indenture number]

Stilpnomelane

K(Fe2+,Mg,Fe3+,Al)8(Si,Al)12(O,OH)27·2H2O

triklin : 1 : P1

9.EF.100

Umbrianite

K7Na2Ca2[Al3Si10O29]F2Cl2

orthorhombisch : mmm : Pmmn

9.EF.118

Minnesotaite

Fe2+3Si4O10(OH)2

triklin : 1 : P1

9.EF.130

Other languages

German

Minnesotait

French

Minnesotaite

English

Minnesotaite

Spanish

Minnesotaíta

Russian

Миннесотаит

Simplified Chinese

铁滑石

Alternative Name

Iron-Talc

Automatic Links to external internet sources (Responsibility is with the operator)

German pages

DeWikiPedia - search for: Minnesotait
Google-Bilder-Suche - search for: Minnesotait
Mineralogisch-Petrographisches-Institut Hamburg - search for: Minnesotait

English pages

Mindat - search for: Minnesotaite
Webmineral - search for:Minnesotaite
Handbook-of-Mineralogy - search for: Minnesotaite
RRUFF - Raman, XRD and other mineral data - search for: Minnesotaite
RRUFF - References and PDF downloads - search for: Minnesotaite
American-Mineralogist-Crystal-Structure-Database - search for: Minnesotaite
Athena - search for: Minnesotaite

Russian pages

Webmineral.ru - search for: Миннесотаит

Mineral Dealer

German pages

hausen - Mineralgroßhandel - search for: Minnesotait
Crystal-Treasure.com - search for: Minnesotait
Bosse - search for: Minnesotait

Locations with GPS information