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While externally similar shapes, these two minerals are very different inside.
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Tridymite from
Tapuaeharuru Bay, Lake Taupo, Taupo District, Waikato Region, New Zealand


Locality type:Bay
Classification
Species:Tridymite
Formula:SiO2
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Fayalite7
Phlogopite3
Iron oxide1
Data
Mineral Data:Click here to view Tridymite data
Locality Data:Click here to view Tapuaeharuru Bay, Lake Taupo, Taupo District, Waikato Region, New Zealand
Data Identifiers
Mindat Occurrence Record ID:656017
Long-form Identifier:1:3:656017:1
GUID (UUID V4):0
References
Thornton, J. (Ed.), The Micro-Scope, No. 41, February 2002
 
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