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Aminoffite

Pictures (1 Images total)

Aminoffit
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Aminoffit
Bildbreite: 1,5 mm; Fundort: Långban, Filipstad, Värmland, Schweden
Copyright: Christian Rewitzer; Contribution: Hg
Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Långban, Distrikt/Långban Fe-Mn-(Ba-As-Pb-Sb) Lagerstätte
Mineral: Aminoffite
Image: 1328608356
License: Usage for Mineralienatlas project only
Aminoffit

Bildbreite: 1,5 mm; Fundort: Långban, Filipstad, Värmland, Schweden
Copyright: Christian Rewitzer
Contribution: Hg 2012-02-07
Locality: Långban Fe-Mn-(Ba-As-Pb-Sb) Lagerstätte / Långban, Distrikt / Filipstad, Gemeinde / Värmland, Provinz / Schweden

Collectors Summary

Color farblos, blassgelb
Streak color weiß
Hardness (Mohs) 5.5
Solubility - Säuren
Crystal System tetragonal, P42/n

Chemism

Chemical formula

Ca3Be2Si3O10(OH)2

Chemical composition

Beryllium, Calcium, Silicium, Sauerstoff, Wasserstoff

Unit weight: 416.5252086 u; Number of atoms in the formula: 22

Info

Empirical formula:

Ca3Be2Si3O10(OH)2

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)
Hydrogen

H

0.48

2

9.09

1.0079470

2.0158940
Beryllium

Be

4.33

2

9.09

9.0121823

18.0243646
Oxygen

O

46.09

12

54.55

15.9994300

191.9931600
Silicon

Si

20.23

3

13.64

28.0855300

84.2565900
Calcium

Ca

28.87

3

13.64

40.0784000

120.2352000

Analysis wt%

SiO2 : 42.49, Al2O3 : 4.41, BeO : 6.20, CaO : 40.27, H2O : 6.45 (Ref: Geologiska Föreningens i Stockholm 37)

Strunz 9th edition incl. updates

9.BH.05

9: Silikate (Germanate)
B: Gruppensilikate (Sorosilikate)
H: Gruppen(Soro)-Silikate mit Si3O10 oder größeren Anionen; Kationen in tetrahedraler [4] und größerer Koordination
05:Aminoffit-Gruppe

Lapis Classification

VIII/C.29-010

VIII: SILIKATE
C: Gruppensilikate
29: [Si3O10] 8--Gruppen

Classification by Hölzel

9.BP.200

9: SILICATES
B: Sorosilicates
P: Si3O10-Group

Dana 8th edition

57.01.01.01

57: Sorosilicates Sorosilicate Insular Si3O10 and Larger Noncyclic Groups
01: Sorosilicates Sorosilicate Insular Si3O10 and Larger Noncyclic Groups with [Si3O10] groups
01: Aminoffite and related species

IMA status

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

Mineral status

anerkanntes Mineral

Optical Properties

Color

farblos, blassgelb

Streak color

weiß

max. Birefringence

0.010
Birefringence chart\! Aminoffite title=Birefringence chart Aminoffite

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

1.647

RI value γ / ε

1.637

Ri mean

1.644

2V angle

Uniaxial (-)

Optical Data Luminescence

Color SW-UV (254nm)

  

orange

SW-UV Other Colors

    

orangerot, rot

Afterglow (Persistant Luminescence)

keine Daten

Crystallography

Crystal System

tetragonal

Class (H-M)

4/m

Space Group number

86

Space Group

P42/n

Cell parameters a (Å)

9.809

Cell parameters b (Å)

-

Cell parameters c (Å)

9.844

Cell parameters a/b or c/a

1.004

Cell parameters c/b

-

Cell parameters α

90°

Cell parameters β

90°

Cell parameters γ

90°

Z

4

Volume (ų)

947.155

X-Ray Powder Diffraction

6.97(70),
4.40(70),
4.02(80),
3.48(70),
3.11(70),
2.840(90),
2.614(100),
2.141(80)
XRD chart Aminoffite

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

Crystals 3D

Open larger view

Crystal Structure 3D

Open larger view

Physical Properties

Hardness (Mohs)

5.5

VHN (Hardness Vickers)

530 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

2.94 (gemessen)

2.921 ( ρ calc. Mineralienatlas )

Instability

- Säuren

(Co-)Type locality

(Co-)Type locality

Schweden/Värmland, Provinz/Filipstad, Gemeinde/Långban, Distrikt/Långban Fe-Mn-(Ba-As-Pb-Sb) Lagerstätte

Preface

Author (Name, Year)

Hurlbut, 1937

References

Canadian Mineralogist 40 (2002), 915

Other languages

German

Aminoffit

Spanish

Aminoffita

French

Aminoffite

English

Aminoffite

Russian

Аминовит

CNMNC symbol

Symbol

Amf

Locations with GPS information

IDs

GUSID (Global unique identifier short form) H6sErIIEhE-wI2E-CFdPWA
GUID (Global unique identifier) AC04AB1F-0482-4F84-B023-613E08574F58
Database ID 108