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Marokite

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Formula:
CaMn23+O4
System:
Orthorhombic
Name:
For the first occurrence in Morocco, Maroc in French.
This page provides mineralogical data about Marokite.

Classification of Marokite

Approved
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
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http://www.mindat.org/min-2578.html
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First Recorded Occurrence of Marokite

Year of Discovery:
1963

Crystallography of Marokite

Crystal System:
Orthorhombic
Cell Parameters:
a = 9.71Å, b = 10.03Å, c = 3.16Å
Ratio:
a:b:c = 0.968 : 1 : 0.315
Unit Cell Volume:
V 307.76 ų (Calculated from Unit Cell)
X-Ray Powder Diffraction Data:
d-spacingIntensity
2.71 (vs)
2.22 (vs)
2.29 (s)
2.07 (s)
2.87 (m)
2.56 (m)
1.63 (m)

Chemical Properties of Marokite

Formula:
CaMn23+O4
Essential elements:
All elements listed in formula:

Relationship of Marokite to other Species

7.4.1BromelliteBeO
7.4.2BehoiteBe(OH)2
7.4.3ClinobehoiteBe(OH)2
7.4.4ChrysoberylBeAl2O4
7.4.5Magnesiotaaffeite-2N’2SMg3Al8BeO16
7.4.6Magnesiotaaffeite-6N’3SMg2BeAl6O12
7.4.7PericlaseMgO
7.4.8BruciteMg(OH)2
7.4.9SpinelMgAl2O4
7.4.10MeixneriteMg6Al2(OH)16(OH)2 · 4H2O
7.4.11LimeCaO
7.4.12PortlanditeCa(OH)2
7.4.13ChlormayeniteCa12Al14O32Cl2
7.4.14HydrocalumiteCa4Al2(OH)12(Cl,CO3,OH)2 · 4H2O
7.4.16Ranciéite(Ca,Mn)Mn4O9 · 3H2O
7.4.17HollanditeBa(Mn64+Mn23+)O16
7.4.18Romanèchite(Ba,H2O)2Mn5O10
7.4.19Todorokite(Ca,K,Na,Mg,Ba,Mn)(Mn,Mg,Al)6O12 · 3H2O

Other Names for Marokite

Name in Other Languages:
German:Marokit
Spanish:Marokita

Other Information

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

References for Marokite

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

Couffon, M. M., Rocher, G. and Protas, J. (1964): Determination de la structure de la marokite. Compt. Rend. 258, 1847-1849. (in French).

American Mineralogist (1964): 49: 817.

American Mineralogist (1968): 53: 495.

Internet Links for Marokite

Localities for Marokite

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.
(TL) indicates type locality for a valid mineral species. (FRL) indicates first recorded locality for everything else. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
Morocco
 
  • Souss-Massa-Draâ Region
    • Ouarzazate Province
Bull.Soc.fr.Min.Crist.(1963) 86, 359-367
South Africa
 
  • Northern Cape Province
    • Kalahari manganese field
      • Black Rock
Am Min 53:495
      • Hotazel
Von Bezing, K. L. et al. (1991) The Kalahari manganese field: An Update, Mineralogical Record 22(4) 279-302;; Beukes, N. J., Burger, A. M., & Gutzmer, J. (1995). Fault-controlled hydrothermal alteration of Palaeoproterozoic manganese ore in Wessels Mine, Kalahari manganese field. South African Journal of Geology, 98(4), 430-451.
      • Kuruman
        • N'Chwaning Mines
Minerals of South Africa
USA
 
  • Nevada
    • Mineral Co.
      • Candelaria District
NBMG Spec. Pub. 31 Minerals of Nevada
Mineral and/or Locality  
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