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Opal-AN from
Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA


Locality type:Mine
Classification
Species:Opal var: Opal-AN
Formula:SiO2 · nH2O
Comments:Occurs in pegmatite.
Confirmation
Validity:Believed Valid
Data
Mineral Data:Click here to view Opal-AN data
Locality Data:Click here to view Helen Beryl Mine, Fourmile, Custer Mining District, Custer County, South Dakota, USA
Data Identifiers
Mindat Occurrence Record ID:68289
Long-form Identifier:1:3:68289:5
GUID (UUID V4):07c0a111-7947-4797-9d77-f1f7fe7a08e2
References
Reference Search (possible matching items)
Book (volume)
review of deposits, a helpful geographical index, and an exceptionally complete listing of books and arucles...America has developed into a major exporter rather than an importer. A VAN NOSTRAND REINHOLD BOOK . Digitized...AMERICA In Iwo Volumes Volume | JOHN SINKANKAS [aN] VAN New NOSTRAND York Cincinnati REINHOLD Toronto...ee pon * : c= : an vi 5 = fii? i a j β€” Β» ya y _β€” ’* : i mine in. q)! Y eit iia...Furcron, Chief Geologist of the Department of Mines, Mining and Geology; on the State of Michigan by Robert
Book (edition)
role in naming the plants and animals, also showed an interest in classifying the minerals. His natural...synonymy was improved and extended. The work became an international classic for over 50 years, due to the...Smithsonian Inst., Washington, D.C. Alan Pring: South Australian Museum, Adelaide, SA, Australia. Gunnar...XV xvi Introduction international members and an affirmative response of at least two-thirds of those...Once accepted, the information must be published in an appropriate journal within two years or the CNMMN
 
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