Manganlotharmeyerite (original) (raw)

A valid IMA mineral species

About ManganlotharmeyeriteHide

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Formula:

CaMn3+2(AsO4)2(OH)2

May contain minor Zn replacing Mn.

Colour:

Brown-red to dark reddish orange

Crystal System:

Monoclinic

Name:

For its relationship with lotharmeyerite and for the presence of manganese.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:11206:4

dc919b39-4673-4cc7-ba69-95df2f3521ef

IMA Classification of ManganlotharmeyeriteHide

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Classification of ManganlotharmeyeriteHide

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8.CG.15

8 : PHOSPHATES, ARSENATES, VANADATES
C : Phosphates without additional anions, with H2O
G : With large and medium-sized cations, RO4:H2O = 1:1

Mineral SymbolsHide

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As of 2021 there are now IMA–CNMNC approved mineral symbols (abbreviations) for each mineral species, useful for tables and diagrams.

Physical Properties of ManganlotharmeyeriteHide

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Colour:

Brown-red to dark reddish orange

Cleavage:

Distinct/Good
{001}

Fracture:

Irregular/Uneven

Density:

3.77(2) g/cm3 (Measured) 3.75(2) g/cm3 (Calculated)

Comment:

The uncertainty for the calculated density arises from the compositional range.

Optical Data of ManganlotharmeyeriteHide

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RI values:

_n_α = 1.785(5) _n_β = 1.814(5) _n_γ = 1.854(5)

2V:

Measured: 85° , Calculated: 82°

δ = 0.069

Image shows birefringence interference colour range (at 30µm thickness)
and does not take into account mineral colouration.

Optical Extinction:

The orientation of the optical indicatrix is unknown.

Comments:

In the type material, optically homogeneous grains usually do not show crystal faces, and their size does not exceed 100 µm.

Chemistry of ManganlotharmeyeriteHide

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Mindat Formula:

CaMn3+2(AsO4)2(OH)2

May contain minor Zn replacing Mn.

Common Impurities:

V,Fe,Ni,Co,Zn,Al

Crystallography of ManganlotharmeyeriteHide

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Crystal System:

Monoclinic

Class (H-M):

2/m - Prismatic

Cell Parameters:

a = 9.043(1) Å, b = 6.2314(7) Å, c = 7.3889(9) Å
β = 116.399(2)°

Ratio:

a:b:c = 1.451 : 1 : 1.186

Morphology:

Elongate platy crystals.

Twinning:

Not mentioned in type description.

Crystal StructureHide

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ID	Species	Reference	Link	Year	Locality	Pressure (GPa)	Temp (K)
0005797	Manganlotharmeyerite	Brugger J, Krivovichev S V, Kolitsch U, Meisser N, Andrut M, Ansermet S, Burns P C (2002) Description and crystal structure of manganlotharmeyerite, Ca(Mn,_,Mg)2{AsO4,[AsO2(OH)2]}2(OH,H2O)2, from the Starlera Mn-deposit, Swiss Alps, and a redefinition of lotharmeyerite The Canadian Mineralogist 40 1597-1608		2002	Starlera Mn-deposit, Swiss Alps	0	293

CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Comments:

Starlera mine, Grisons, Switzerland. The data are from the type type description.

Geological EnvironmentHide

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Type Occurrence of ManganlotharmeyeriteHide

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General Appearance of Type Material:

Elongate platy crystals and aggregates up to 1 mm in length.

Place of Conservation of Type Material:

Musée géologique cantonal, Lausanne, Switzerland.

Geological Setting of Type Material:

Retrograde metamorphosed Triassic (carbonate-hosted) syngenetic exhalative Mn-ores.

Associated Minerals at Type Locality:

Synonyms of ManganlotharmeyeriteHide

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Other Language Names for ManganlotharmeyeriteHide

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Relationship of Manganlotharmeyerite to other SpeciesHide

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Other Members of this group:

Common AssociatesHide

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Associated Minerals Based on Photo Data:

Related Minerals - Strunz-mindat GroupingHide

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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 ManganlotharmeyeriteHide

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References for ManganlotharmeyeriteHide

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Reference List:

Brugger, J., Krivovichev, S. V., Kolitsch, U., Meisser, N., Andrut, M., Ansermet, S., Burns, P. C. (2002) Description and crystal structure of manganlotharmeyerite, Ca[Mn3+,◻,Mg]2{AsO4,[AsO2(OH)2]}2(OH,H2O)2 from the Starlera Mn deposit, Swiss Alps, and a redefinition of lotharmeyerite. The Canadian Mineralogist, 40 (6) 1597-1608 doi:10.2113/gscanmin.40.6.1597

Localities for ManganlotharmeyeriteHide

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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.

Chile
Atacama Copiapó Province Tierra Amarilla Pampa Larga mining district ⓘ Jote Mine	samples analysed by Gerhard Mohn
Mexico
Durango Mapimí Municipality Mapimí ⓘ Ojuela Mine	Moore et al. (2003)
ⓘ La Cigueña vein	Thomas P. Moore (2008)
North Macedonia
Kavadarci Municipality Ržanovo Allchar ⓘ Crven Dol ?	Đorđević et al. (2021)
Switzerland (TL)
Grisons Viamala Region Ferrera Starlera Valley ⓘ Starlera Mine (TL)	Brugger et al. (2002)