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Mineralogical ClassificationType minerals from Brazil

9th Apr 2015 22:26 UTCDaniel Atencio

The discovery of new mineral species and type minerals from Brazil.

Daniel Atencio

Brazilian Journal of Geology v. 45, n. 1 (2015)

Minerals were seen merely as sources of chemicals:iron ore, copper ore, etc. However, minerals are not just chemicals associations, since they display crystal structures. These two featurestogether provide properties that can be technologically useful. Eventhough a mineral occurs in very small amount, which does not allow its extraction, it can serve as a model for obtaining the synthetic analogue on an industrial scale. It is necessary that a new-mineralproposal be submitted for approval by the Commission on New Minerals,Nomenclature and Classification (CNMNC) of the International Mineralogical Association (IMA) before publication. Only 65 valid mineral species were first described from Brazil, that is, the type minerals from Brazil. Nineteen of these were published between 1789 and 1959 (0.11 per year). From 1959, when the CNMMN (today CNMNC) – IMA was established, to 2000, 18 approved Brazilianmineral species remain valid (0.43 per year). However, the numberof type minerals from Brazil approved in the last 15 years (2000 to2014) was substantially increased: 28 (1.87 per year). This numberis very small considering the wide range of Brazilian geological environments.The two first type species from Brazil, discovered in the18th century, chrysoberyl and euclase, are important gemological minerals.Two other gem minerals, tourmaline-supergroup members, were published only in the 21st century: uvite and fluor-elbaite. Some type minerals from Brazil are very important technologically speaking.Some examples are menezesite, coutinhoite, lindbergite, pauloabibite, and waimirite-(Y).

download:

http://www.rbg.sbgeo.org.br/index.php/rbg/article/view/30242/19035

10th Apr 2015 08:38 UTCUwe Kolitsch Manager

Thanks, Daniel - Brazil page updated.

10th Apr 2015 11:13 UTCMarco E. Ciriotti Manager

Grazie Daniel!

10th Apr 2015 12:40 UTCLászló Horváth Manager

Thanks Daniel for the update.

10th Apr 2015 17:34 UTCRob Woodside 🌟 Manager

Very Interesting. Thanks so much!

10th Apr 2015 20:05 UTCDoug Daniels

This article indicates why so-called "useless" research may actually be important.

10th Apr 2015 21:10 UTCRui Nunes 🌟 Expert

Caro Daniel,

Muito interessante o artigo. Obrigado pela partilha.

Um forte abraço do outro lado do Atlântico.

Rui

10th Apr 2015 21:18 UTCDaniel Atencio

Dear Uwe, Marco, Lázló, Rob, Doug and Rui,

I am very glad you enjoyed the paper.

All the best,

Daniel

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