https://www.mineral-bosse.de
https://www.mineralbox.biz
https://www.edelsteine-neuburg.de
https://www.mineraliengrosshandel.com
'._('einklappen').'
 

Allactite (Chloroarsenian)

Pictures (3 Images total)

Allaktit
Views (File:
1195842709
): 4152
Allaktit
Fundort: Moss Mine, Nordmark, Filipstad, Värmland, Schweden; Bildbreite: 3 mm
Copyright: Christian Rewitzer; Contribution: Klinoklas
Location: Schweden/Örebro, Provinz/Ljusnarsberg/Mossgruvan (Moss Mine)
Mineral: Allactite
Image: 1195842709
Rating: 8.5 (votes: 2)
License: Usage for Mineralienatlas project only
Allaktit  D

Fundort: Moss Mine, Nordmark, Filipstad, Värmland, Schweden; Bildbreite: 3 mm

Copyright: Christian Rewitzer
Contribution: Klinoklas 2007-11-23
Locality: Mossgruvan (Moss Mine) / Ljusnarsberg / Örebro, Provinz / Schweden
Allaktit xx
Views (File:
1515340750
): 837
Allaktit xx
Östra Mossgruvan,Nordmark,Filipstad/Värmland,Schweden; Bildbreite ca.4 mm
Copyright: Haubi; Contribution: Haubi
Collection: Haubi
Location: Schweden/Värmland, Provinz/Filipstad, Gemeinde/Nordmark (Nordmarksberg)
Mineral: Allactite
Image: 1515340750
License: Usage for Mineralienatlas project only
Allaktit xx

Östra Mossgruvan,Nordmark,Filipstad/Värmland,Schweden; Bildbreite ca.4 mm

Collection: Haubi
Copyright: Haubi
Contribution: Haubi 2018-01-07
Locality: Nordmark (Nordmarksberg) / Filipstad, Gemeinde / Värmland, Provinz / Schweden
Allaktit
Views (File:
1670053622
): 37
Allaktit
Allaktit BB 10 mm Norwegen/Viken, Provinz/Moss/Stbr. Moss (Stbr. Skolt)
Copyright: derhesse; Contribution: anatase2
Collection: anatase2, Collection number: 0096
Location: Norwegen/Østfold, Provinz/Moss, Kommune/Moss (Skolt), Steinbruch
Mineral: Allactite
Image: 1670053622
License: Usage for Mineralienatlas project only
Allaktit (SNr: 0096)

Allaktit BB 10 mm Norwegen/Viken, Provinz/Moss/Stbr. Moss (Stbr. Skolt)

Collection: anatase2
Copyright: derhesse
Contribution: anatase2 2022-12-03
Locality: Moss (Skolt), Steinbruch / Moss, Kommune / Østfold, Provinz / Norwegen

Collectors Summary

Color bräunlichrot, rosarot, farblos bis weiß
Streak color grau zu schwach braun
Lustre Glasglanz, schwacher Fettglanz auf Bruchflächen
Hardness (Mohs) 4.5
Cleavages ausgeprägt {001}
Fracture uneben
Solubility +++ Säuren
Crystal System monoklin, P21/a

Chemism

Chemical formula

Mn2+7(AsO4)2(OH)8

Chemical composition

Arsen, Mangan, Sauerstoff, Wasserstoff

Unit weight: 798.4640093 u; Number of atoms in the formula: 33

Info

Empirical formula:

Mn7(AsO4)2(OH)8

Element

Symbol

Weight%

Atoms

Atoms%

Atom weight (u)

Sum weight (u)

Hydrogen

H

1.01

8

24.24

1.0079470

8.0635760

Oxygen

O

32.06

16

48.48

15.9994300

255.9908800

Manganese

Mn

48.16

7

21.21

54.9380499

384.5663493

Arsenic

As

18.77

2

6.06

74.9216020

149.8432040

Analysis wt%

MnO : 62.23, FeO : 0.49, As2O5 : 28.19, H2O : 8.99 (Ref: Dana, 7th ed. 2)

Strunz 9th edition incl. updates

8.BE.30

8: Phosphate, Arsenate, Vanadate
B: Phosphate, etc., mit weitere Anionen, ohne H2O
E: Mit ausschließlich mittelgroßen [Kationen] (OH, etc.):RO4 > 2:1
30:Allaktit-Gruppe

Lapis Classification

VII/B.15-050

VII: PHOSPHATE, ARSENATE UND VANADATE ("Phosphate" des Registers immer einschließlich isotyper Arsenate und Vanadate!)
B: Wasserfreie Phosphate, mit fremden Anionen F,Cl,O,OH
15: Mittelgroße Kationen: Mg-Mn-Fe-Cu-Zn

Classification by Hölzel

8.BD.200

8: PHOSPHATES ARSENATES VANADATES
B: Phosphates (+Anions -Water)
D: Phosphates, C medium, V: 2, OH/XO4 ò 3/1

Dana 8th edition

41.02.01.01

41: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen
02: Anhydrous Phosphates, etc. Containing Hydroxyl or Halogen where (A B)7 (XO4)2 Zq
01: Allactite Group

IMA status

Anerkannt von der CNMNC

Mineral status

anerkanntes Mineral

IMA Classification

IMA Classification

Allactite group

Optical Properties

Color

bräunlichrot, rosarot, farblos bis weiß

Streak color

grau zu schwach braun

Diaphaneity (Transparency)

durchscheinend

Lustre

Glasglanz, schwacher Fettglanz auf Bruchflächen

max. Birefringence

0.019

Birefringence chart\! Allactite title=Birefringence chart Allactite

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

α = 1.755 - 1.761

RI value β

β = 1.772 - 1

RI value γ / ε

γ = 1.774 - 1.787

Ri mean

1.767

2V angle

Biaxial (-) 0°~ (geemssen)

Orientation

Y = b; X ∧ c = 51°

Dispersion

stark; r > v

Pleochroism

X = blutrot; Y = hellgelb; Z= See-grün

Crystallography

Crystal System

monoklin

Class (H-M)

2/m

Space Group number

14

Space Group

P21/a

Cell parameters a (Å)

11.03

Cell parameters b (Å)

12.12

Cell parameters c (Å)

5.509

Cell parameters a/b or c/a

0.910

Cell parameters c/b

0.455

Cell parameters α

90°

Cell parameters β

114.10

Cell parameters γ

90°

Z

2

Volume (ų)

672.269

Crystal structure

G. Diego Gatta, Ferdinando Bosi, Maria Teresa Fernandez Diaz, Ulf Hålenius: H-bonding scheme in allactite: a combined single-crystal X-ray and neutron diffraction, optical absorption spectroscopy, FTIR and EPMA-WDS study. Mineral Mag. Vol. 80 (2016) S. 719-732.

X-Ray Powder Diffraction

4.95(40),
3.71(60),
3.39(40),
3.28(50),
3.23(50),
3.06(100),
2.929(50),
2.506(40)

XRD chart Allactite

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)

4.5

VHN (Hardness Vickers)

280 (ungefähre Angabe abgeleitet aus der Mohshärte)

Density (g/cm³)

3.94 (berechnet) 3.83 (gemessen)

3.944 ( ρ calc. Mineralienatlas )

Cleavages

ausgeprägt {001}

Fracture

uneben

Tenacity

spröde

Instability

+++ Säuren

(Co-)Type locality

(Co-)Type locality

Schweden/Örebro, Provinz/Ljusnarsberg/Mossgruvan (Moss Mine)

Paragenesis of type material

Synadelphit, Hematolit, Hausmannit, Pyrochroit, Fluorit

Preface

Associations

Pyroaurit, Leucophoenicit, Hodgkinsonit, Adelit, Franklinit, Willemit, Friedelit, Caryopilit, Sphalerit, Fluorit, Baryt, Calcit, Serpentin, Chlorit (Franklin, New Jersey, USA).

Name from

1884 benannt von Stens Anders Sjogren Hjalmar und abgeleitet vom griechischen Wort αλλάκτειν ("allaktein"), "zu ändern", in Anspielung auf seine markanten Pleochroismus.

Author (Name, Year)

Sjögren, 1884

References

Sjögren - Geologiska Föeningens I Stockholm. Förhandlinger, Stockholm 109 (1884) (als Allaktit).

Palache, C., Berman, H., & Frondel, C. - The System of Mineralogy of James Dwight Dana and Edward Salisbury Dana, Yale University 1837-1892, Volume II. John Wiley and Sons, Inc., New York, 7th edition, revised and enlarged, 1124 pp. (1951) 785-787.

Dunn, P.J. - Allactite from Franklin and Sterling Hill, New Jersey. Mineralogical Record, 14 (1983), 251–252

Handbook of Mineralogy (Anthony et al.), 4 (2000), 12

Moore, Paul B., - Crystal Chemistry of the Basic Manganese Arsenate Minerals, American Mineralogist, 53 (1968) 733-741.

IMA group assignments

Other languages

Spanish

Alactita

English

Allactite

French

Allactite

German

Allaktit

Russian

Аллактит

Russian

Альфорсит

Simplified Chinese

砷水锰矿

Alternative Name

German

Allactit

Spanish

Allactita

Spanish

Allaktita

Allaktite

English

Chloroarsenian

Elfstorpite

CNMNC symbol

Symbol

Ala

Locations with GPS information

IDs

GUSID (Global unique identifier short form) uxtt0iRAk0Ssd2rOWg-Bgg
GUID (Global unique identifier) D26D1BBB-4024-4493-AC77-6ACE5A0F8182
Database ID 59