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Mocha Stone

A variety of 'Agate' [Quartz]
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Formula:
SiO2
A variety of agate (chalcedony) containing inclusions of pyrolusite.

Originally described from Mocha, Saudi Arabia.


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Unique IdentifiersHide

Mindat ID:
2736 (as Mocha Stone)
3337 (as Quartz)
Long-form identifier:
mindat:1:1:2736:2 (as Mocha Stone)
mindat:1:1:3337:0 (as Quartz)

Pronunciation of Mocha StoneHide

Pronunciation:
PlayRecorded byCountry
Jolyon RalphUnited Kingdom

Chemistry of Mocha StoneHide

Mindat Formula:
SiO2
Element Weights:
Element% weight
O53.257 %
Si46.744 %

Calculated from ideal end-member formula.
O
Si
Elements listed:
O, Si - search for minerals with similar chemistry

Synonyms of Mocha StoneHide

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 Mocha StoneHide

References for Mocha StoneHide

Reference List:

Localities for Mocha StoneHide

Showing 1 localities.

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.
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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.
Yemen
 
  • Taiz Governorate
Clark (1993)
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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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