UM1986-05-AsO:HMn (original) (raw)

A material that is NOT an approved mineral species

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.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:47903:9

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

Chemistry of UM1986-05-AsO:HMnHide

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Mindat Formula:

Mn3As2O4(OH)4

Crystallography of UM1986-05-AsO:HMnHide

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Cell Parameters:

a = 3.308 Å, c = 14.471 Å

Other InformationHide

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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

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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

Localities for UM1986-05-AsO:HMnHide

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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.

Locality ListHide

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- 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.