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Gahnospinel

A variety of Spinel
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Formula:
(Mg,Zn)Al2O4
A variety of spinel rich in zinc. May grade into gahnite.

Originally reported from Gem gravels, Ratnapura, Sabaragamuwa Province, Sri Lanka.




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Unique IdentifiersHide

Mindat ID:
1633 (as Gahnospinel)
3729 (as Spinel)
Long-form identifier:
mindat:1:1:1633:5 (as Gahnospinel)
mindat:1:1:3729:3 (as Spinel)

Chemistry of GahnospinelHide

Mindat Formula:
(Mg,Zn)Al2O4
Element Weights:
Element% weight
O44.985 %
Al37.931 %
Mg17.084 %

Calculated from ideal end-member formula.

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 GahnospinelHide

References for GahnospinelHide

Localities for GahnospinelHide

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

- 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.
Czech Republic
 
  • Liberec Region
    • Jablonec nad Nisou District
      • Kořenov
        • Jizerka
Lukas Jankaj specimen
Russia
 
  • Moscow Oblast
    • Dmitrovsky District
Pavel M. Kartashov analytical data 2025
Sri Lanka
 
  • Sabaragamuwa Province
    • Ratnapura District
      • Ratnapura
Clark (1993)
 
and/or  
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Copyright © mindat.org and the Hudson Institute of Mineralogy 1993-2025, except where stated. Most political location boundaries are © OpenStreetMap contributors. Mindat.org relies on the contributions of thousands of members and supporters. Founded in 2000 by Jolyon Ralph.
To cite: Ralph, J., Von Bargen, D., Martynov, P., Zhang, J., Que, X., Prabhu, A., Morrison, S. M., Li, W., Chen, W., & Ma, X. (2025). Mindat.org: The open access mineralogy database to accelerate data-intensive geoscience research. American Mineralogist, 110(6), 833–844. doi:10.2138/am-2024-9486.
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