Marokite (original) (raw)

A valid IMA mineral species

About MarokiteHide

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Crystal System:

Orthorhombic

Name:

For the first occurrence in Morocco, Maroc in French.

Unique IdentifiersHide

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Long-form identifier:

mindat:1:1:2578:8

73d17d3b-e650-46aa-935f-3e0e49f19f30

IMA Classification of MarokiteHide

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Type description reference:

Classification of MarokiteHide

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4.BC.05

4 : OXIDES (Hydroxides, V[5,6] vanadates, arsenites, antimonites, bismuthites, sulfites, selenites, tellurites, iodates)
B : Metal: Oxygen = 3:4 and similar
C : With medium-sized and large cations

7.2.10.1

7 : MULTIPLE OXIDES
2 : AB2X4

7.4.15

7 : Oxides and Hydroxides
4 : Oxides of Be, Mg and the alkaline earths

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 MarokiteHide

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Hardness:

VHN100=800 - Vickers

Cleavage:

Perfect
{100} Perfect, {001} Good

Density:

4.64 g/cm3 (Measured) 4.63 g/cm3 (Calculated)

Optical Data of MarokiteHide

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Anisotropism:

Strong: yellowish green to greenish yellow

Bireflectance:

Yellowish gray to gray-brown

Reflectivity:

Graph shows reflectance levels at different wavelengths (in nm). Top of box is 100%. Peak reflectance is 20.2–22.9%.

Colour in reflected light:

Gray to brown

Internal Reflections:

Dark red, carmine red

Comments:

X = c = safflower-red; Y and Z = opaque (very dark red in very thin sections)

Chemistry of MarokiteHide

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Crystallography of MarokiteHide

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Crystal System:

Orthorhombic

Cell Parameters:

a = 9.71(2) Å, b = 10.03(2) Å, c = 3.162(5) Å

Ratio:

a:b:c = 0.968 : 1 : 0.315

Unit Cell V:

307.95 ų (Calculated from Unit Cell)

Morphology:

Prismatic, flattened on {010}, with {120}, {110}, {201}, and {011}.

Comment:

Point Group: 2/m 2/m 2/m or mm2.; Space Group: Pmab or P21ab.

Crystal StructureHide

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Load
Unit Cell |Unit Cell Packed
2x2x2 |3x3x3 |4x4x4

Show
Big Balls |Small Balls |Just Balls |Spacefill
Polyhedra Off |Si Polyhedra |All Polyhedra
Remove metal-metal sticks

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CIF Raw Data - click here to close

X-Ray Powder DiffractionHide

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Powder Diffraction Data:

Geological EnvironmentHide

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Type Occurrence of MarokiteHide

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General Appearance of Type Material:

Prismatic crystals to 5 cm.

Place of Conservation of Type Material:

Geological Survey, Rabat, Morocco.
National School of Mines, Paris, France.

Geological Setting of Type Material:

Associated Minerals at Type Locality:

Reference:

Gaudefroy, C., Jouravsky, G., Permingeat, F. (1963) La marokite, CaMn2O4 une nouvelle éspèce minérale. Bulletin de la Société française de Minéralogie et de Cristallographie: 86: 359-67.

Synonyms of MarokiteHide

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Other Language Names for MarokiteHide

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Relationship of Marokite 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 MarokiteHide

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References for MarokiteHide

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Reference List:

Zouari, S., Ranno, L., Cheikh-Rouhou, A., Isnard, O., Pernet, M., Wolfers, P., Strobel, P. (2003) New model for the magnetic structure of the marokite-type oxide CaMn2O4. Journal of Alloys and Compounds: 353: 5-11.

Localities for MarokiteHide

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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.