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While externally similar shapes, these two minerals are very different inside.
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Chert from
La China mine, Minas, Lavalleja Department, Uruguay


Locality type:Mine
Classification
Type:Chert
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Chert data
Locality Data:Click here to view La China mine, Minas, Lavalleja Department, Uruguay
Data Identifiers
Mindat Occurrence Record ID:1890294
Long-form Identifier:1:3:1890294:3
GUID (UUID V4):0
References
Sánchez-Bettucci, L., Oyhantçabal, P., Loureiro, J., Ramos, V.A., Preciozzi, F., Basei, M.A.S. (2004) Mineralizations of the Lavalleja Group (Uruguay), a Probable Neoproterozoic Volcano-sedimentary Sequence. Gondwana Research, 7 (3) 745-751 doi:10.1016/s1342-937x(05)71060-1
 
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