Zobrazeno 1 - 3
of 3
pro vyhledávání: '"Lorena N. Dias"'
Autor:
J. R. Toledo, Raphaela de Oliveira, Joachim Karfunkel, Lorena N. Dias, Ricardo Scholz, Klaus Krambrock, Maurício V. B. Pinheiro, Mario Luiz de Sá Carneiro Chaves
Publikováno v:
American Mineralogist. 105:1051-1059
Montebrasite is a lithium aluminum phosphate mineral with the chemical formula LiAlPO4(Fx,OH1–x) and considered a rare gemstone material when exhibiting good crystallinity. In general, montebrasite is colorless, sometimes pale yellow or pale blue.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28adb7fd3df467e088d48ed973617345
https://doi.org/10.2138/am-2020-7168
https://doi.org/10.2138/am-2020-7168
Autor:
Roberto L. Moreira, J. Schnellrath, Lorena N. Dias, Maurício V. B. Pinheiro, Joachim Karfunkel, Ricardo Scholz, K.J. Guedes, Klaus Krambrock, L. A. D. Menezes Filho
Publikováno v:
American Mineralogist. 96:42-52
aB stract Natural single-crystal specimens of the montebrasite/amblygonite series from Brazil, with general formula LiAlPO4(F,OH), were investigated by electron microprobe, Raman spectroscopy, X-ray diffraction, and infrared absorption. Since little
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6b6600b3d8ffee05a333c0c2b43b43f8
https://doi.org/10.2138/am.2011.3551
https://doi.org/10.2138/am.2011.3551
Publikováno v:
Physics and Chemistry of Minerals. 36:519-525
Irradiation techniques are often applied to gem minerals for color enhancement purposes. Natural green, blue and colorless specimens of rare gemological quality euclase, BeAlSiO4(OH), from Brazil were irradiated with gamma rays in the dose range from
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::371ba9218b00a04570f6bbef2b7d8924
https://doi.org/10.1007/s00269-009-0297-z
https://doi.org/10.1007/s00269-009-0297-z