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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Ribeirite

A variety of Zircon
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Formula:
Zr(SiO4)
Name:
Named after J.C. Ribeiro.
An yttrian hydrous Zircon.
Originally reported from Macarani, Bahia, Northeast Region, Brazil.


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Unique IdentifiersHide

Mindat ID:
3412 (as Ribeirite)
4421 (as Zircon)
Long-form identifier:
mindat:1:1:3412:4 (as Ribeirite)
mindat:1:1:4421:5 (as Zircon)

Similar NamesHide

RaberiteA valid IMA mineral speciesTl5Ag4As6SbS15
RuberiteA synonym of CupriteCu2O
RubriteFe3+(SO4)(OH) · H2O

Chemistry of RibeiriteHide

Mindat Formula:
Zr(SiO4)
Element Weights:
Element% weight
Zr49.766 %
O34.913 %
Si15.322 %

Calculated from ideal end-member formula.
Elements listed:
O, Si, Zr - search for minerals with similar chemistry

Other Language Names for RibeiriteHide

German:Ribeirit
Spanish:Ribeirita

Other InformationHide

Health Risks:
No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

Internet Links for RibeiriteHide

References for RibeiriteHide

Reference List:

Localities for RibeiriteHide

This map shows a selection of localities that have latitude and longitude coordinates recorded. Click on the symbol to view information about a locality. The symbol next to localities in the list can be used to jump to that position on the map.

Locality ListHide

- This locality has map coordinates listed. - This locality has estimated coordinates. ⓘ - Click for references and further information on this occurrence. ? - Indicates mineral may be doubtful at this locality. - Good crystals or important locality for species. - World class for species or very significant. (TL) - Type Locality for a valid mineral species. (FRL) - First Recorded Locality for everything else (eg varieties). Struck out - Mineral was erroneously reported from this locality. Faded * - Never found at this locality but inferred to have existed at some point in the past (e.g. from pseudomorphs).

All localities listed without proper references should be considered as questionable.
Brazil
 
  • Bahia
Clark (1993)
USA
 
  • Alaska
    • Prince of Wales-Hyder Census Area
      • Ketchikan Mining District
        • Prince of Wales Island
          • Bokan Mountain
Philpotts et al. (1998)
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