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It's a mineral found mostly in the farthest reaches of space vs one so common an exhaustive list of localities is nigh impossible as alloy #taenite faces off against clay #nontronite.
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Clark, Austin H., Clark, Ailsa M. (1951) A NEW SPECIES OF THE CRINOID GENUS CYCLOMETRA FROM SOUTH AFRICA. Transactions of the Royal Society of South Africa, 33 (2). 189-192 doi:10.1080/00359195109519883

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Reference TypeJournal (article/letter/editorial)
TitleA NEW SPECIES OF THE CRINOID GENUS CYCLOMETRA FROM SOUTH AFRICA
JournalTransactions of the Royal Society of South Africa
AuthorsClark, Austin H.Author
Clark, Ailsa M.Author
Year1951 (January)Volume33
Issue2
PublisherInforma UK Limited
DOIdoi:10.1080/00359195109519883
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Mindat Ref. ID2652017Long-form Identifiermindat:1:5:2652017:3
GUID0
Full ReferenceClark, Austin H., Clark, Ailsa M. (1951) A NEW SPECIES OF THE CRINOID GENUS CYCLOMETRA FROM SOUTH AFRICA. Transactions of the Royal Society of South Africa, 33 (2). 189-192 doi:10.1080/00359195109519883
Plain TextClark, Austin H., Clark, Ailsa M. (1951) A NEW SPECIES OF THE CRINOID GENUS CYCLOMETRA FROM SOUTH AFRICA. Transactions of the Royal Society of South Africa, 33 (2). 189-192 doi:10.1080/00359195109519883
In(1951, January) Transactions of the Royal Society of South Africa Vol. 33 (2) Informa UK Limited


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