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UM1986-05-AsO:HMn

A material that is NOT an approved mineral species

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Formula:

Mn₃As₂O₄(OH)₄

Crystal System:

Trigonal

Polymorph of:

Manganarsite, UM1986-06-AsO:HMn

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 schallerite. Contains mostly the schallerite-like layers, but also has some friedelite-like ones.

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Unique IdentifiersHide

Mindat ID:

47903

Long-form identifier:

mindat:1:1:47903:9

GUID
(UUID V4):

dc235b27-e05c-4b26-8b96-1913f70ace0d

Chemistry of UM1986-05-AsO:HMnHide

Mindat Formula:

Mn₃As₂O₄(OH)₄

Elements listed:

As, H, Mn, O - search for minerals with similar chemistry

Crystallography of UM1986-05-AsO:HMnHide

Crystal System:

Trigonal

Cell Parameters:

a = 3.308 Å, c = 14.471 Å

Ratio:

a:c = 1 : 4.375

Unit Cell V:

137.1 Å³

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 UM1986-05-AsO:HMnHide

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References for UM1986-05-AsO:HMnHide

Reference List:

Peacor, D. R., Dunn, P. J., Simmons, W. B., Wicks, F. J. (1986) Arsenites related to layer silicates: Manganarsite, the arsenite analogue of manganpyrosmalite and unnamed analogues of friedelite and schallerite from Långban, Sweden. American Mineralogist, 71 (11-12) 1517-1521

Smith, D. G.W., Nickel, E. H. (2007) A System of Codification for Unnamed Minerals: Report of the Subcommittee for Unnamed Minerals of the Ima Commission on New Minerals, Nomenclature and Classification. The Canadian Mineralogist, 45 (4) 983-990 doi:10.2113/gscanmin.45.4.983

Localities for UM1986-05-AsO:HMnHide

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

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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

ⓘ Långban Mine

Peacor et al. (1986)

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