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UM1986-06-AsO:HMn

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Formula:
Mn3As2O4(OH)4
Crystal System:
Trigonal
7Å-layered structure as in case of manganarsite and the third polymorph. All three species are said to be analogous to the principal members of the friedelite group: friedelite, pyrosmalite-(Mn), and schallerite.

The current phase most likely corresponds to the As3+-analogue of friedelite. Contains mostly the schallerite-like layers, but also has some friedelite-like ones.


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Unique IdentifiersHide

Mindat ID:
47904
Long-form identifier:
mindat:1:1:47904:8

Similar NamesHide

UM1986-05-AsO:HMnMn3As2O4(OH)4
UM1997-16-AsO:HMgValid as an unnamed mineralMg-As-O-H
UM1997-21-AsO:HZnValid as an unnamed mineralZn-As-O-H

Chemistry of UM1986-06-AsO:HMnHide

Mindat Formula:
Mn3As2O4(OH)4
Element Weights:
Element% weight
Mn36.897 %
As33.546 %
O28.655 %
H0.903 %

Calculated from ideal end-member formula.
Elements listed:
As, H, Mn, O - search for minerals with similar chemistry

Crystallography of UM1986-06-AsO:HMnHide

Crystal System:
Trigonal
Cell Parameters:
a = 3.319 Å, c = 21.72 Å
Ratio:
a:c = 1 : 6.544
Unit Cell V:
207.1 ų
Z:
1

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for UM1986-06-AsO:HMnHide

References for UM1986-06-AsO:HMnHide

Localities for UM1986-06-AsO:HMnHide

Showing 1 localities.

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.
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Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Sweden
 
  • Värmland County
    • Filipstad
      • Långban Ore District
Peacor et al. (1986)
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