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While externally similar shapes, these two minerals are very different inside.
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Sanidine from
Colima volcano (Volcan de Fuego; Volcan de Colima), Colima volcanic complex, Jalisco, Mexico


Locality type:Volcano
Classification
Species:Sanidine
Formula:K(AlSi3O8)
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Sanidine data
Locality Data:Click here to view Colima volcano (Volcan de Fuego; Volcan de Colima), Colima volcanic complex, Jalisco, Mexico
Data Identifiers
Mindat Occurrence Record ID:942460
Long-form Identifier:1:3:942460:9
GUID (UUID V4):0
References
Gupta, Alok Krishna (2015) Origin of Potassium-rich Silica-deficient Igneous Rocks. Springer India. doi:10.1007/978-81-322-2083-1
 
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