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Hydromagnesite from
Jewel Cave, Jewel Cave National Monument, Custer County, South Dakota, USA


Locality type:Cave
Classification
Species:Hydromagnesite
Formula:Mg5(CO3)4(OH)2 · 4H2O
Comments:Rare formation of collapsed "balloons" of thinwalled (0.05mm) bag like structures. First time found in a cave formation.
Colour:pearly white
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Hydromagnesite data
Locality Data:Click here to view Jewel Cave, Jewel Cave National Monument, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:214745
Long-form Identifier:1:3:214745:1
GUID (UUID V4):0
Nearest other occurrences of Hydromagnesite
34.2km (21.2 miles) ⓘWind Cave, Wind Cave National Park, Custer County, South Dakota, USA
References
Roberts, Willard Lincoln, Rapp, George Jr. (1965) Mineralogy of the Black Hills. Bulletin 18. South Dakota School of Mines and Technologypp.81-90
 
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