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Bassanite

Named after Francesco Bassani, former Professor of Paleontology at the University of Naples in Italy. Bassanite is an uncommon mineral with localities in Italy, Tunisia, the United States, Canada, Australia, and Antarctica, among a few others. It occurs as an alteration product of gypsum in leucite, as a fumarolic mineral, in dry or perennially dry lake beds, and in caves interlayer with gypsum. Associated minerals include, additionally, anhydrite, Celestine, calcite, and gibbsite.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bassanite.pdf

Bastnasite-(Ce)

Named for the type locality at the Bastnas mines in Vastmanland, Sweden and for the dominance of cerium over the other rare earth elements in the composition. Bastasite-Ce is an uncommon mineral, but is the most common rare earth bearing mineral. It is usually a hydrothermal mineral although it is possible to be a primary mineral as well. It can be found in granite, alkali syenites and pegmatites, carbonatites, contact metamorphic deposits, and as a detrital mineral in placer deposits. Localities include in, additionally, France, Turkey, Afghanistan, Pakistan, Madagascar, Burundi, Zambia, the United States, Canada, China, and several others. Bastnasite-Ce has a dark red cathodoluminescence. It is strongly piezoelectric and generated a charge in response to pressure.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bastnasite-(Ce).pdf

Bastnasite-(La)

Named as a member of the bastnasite species which are in turn named for the original locality at the Bastnas mines in Vastmanland, Sweden and for the dominance of lanthanum over the other rare earth elements in the composition. Basnasite-La is a rare mineral that occurs in late ankerite carbonatites at its type locality in the Belaya Zima REE-Nb deposit in Russia. Additional localities include in Pakistan, Madagascar, Malawi, Nigeria, South Africa, South Korea, Australia, the United States, Germany, Greece, and Sweden.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bastnasite-(La).pdf

Bastnasite-(Y)

Named as a member of the bastnasite species which are in turn named for the original locality at the Bastnas mines in Vastmanland, Sweden and for the dominance of yttrium over the other rare earth elements in the composition. Basnasite-Y is a rare mineral that occurs as a secondary mineral in a microcline-quartz pegmatite vein at the type locality in the Verkhnee Espe Massif in Kazakhstan. Additional localities include in South Korea, Germany, China, and Tajikistan.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/bastnasite-(Y).pdf

Batisite

Named for the chemical symbol for the barium (Ba), titanium (Ti), and silicon (Si) in the composition. Batisite is a rare mineral that can be found in Russia, Germany, Canada, and Australia only. It occurs at the type locality in the Inagli Massif in Russia “in aegirine-arfvedsonite-microcline pegmatites in dunites.” Some samples of Batisite are piezoelectric and will generate a charge in response to pressure changes.

Ref. Handbook of Mineralogy, Anthony et al (1995) and MSA at http://www.handbookofmineralogy.org/pdfs/batisite.pdf

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