Search Mineralpedia – A Mineral Photo Database and Identification Guide

Named in honor of Allen V. Heyl, an economic geologist with the United States Geological Suvey. Aheylite is a rare mineral that can be found at the type locality at the Huanuni mine in the Oruro Department of Bolivia, at Bali Lo in the Ashburton Downs of Western Australia, Australia, and possibly at the Les Montmins mine in Auvergne, France. At the type locality, Aheylite is found as a hydrothermal mineral in the base metal tin deposit in association with variscite, sphalerite, vivianite, wavellite, cassiterite, pyrite, and quartz.

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

Named for Friedrich E. Ahlfeld, a German-Bolivian mining engineer and mineralogist. Ahlfeldite is a rare mineral that can be found only in Bolivia at the Virgen de Surumi mine, its type locality, and at the El Dragon mine, both in the Potosi Department. Ahlfeldite is an “alteration product of nickel-bearing selenides and sulfides” in association with perroseite, chalcomenite, olsacherite, cerussite, anglesite, lepidocrocite, and goethite.

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

Named after Arthur Aikin, an English chemist, mineralogist, and founder and Secretary of the Geological Society of London, England. Aikinite is an uncommon mineral that is found in hydrothermal veins in localities in Russia, Slovakia, France, the United States, Mexico, and many others. Minerals associated with Aikinite include gold, pyrite, galena, tennantite, bismuthinite, enargite, chalcopyrite, and quartz.

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

Named after the type locality at the New Cornelia mine, also called the Ajo mine, in Ajo, Arizona, USA. Ajoite is a rare mineral that occurs in additional USA localities, as well as in Mexico, South Africa, Namibia, Austria, Romania, Germany, and Japan. It is found “in oxidized copper-rich base metal deposits” in association with shattuckite, conichalcite, quartz, muscovite, pyrite, creaseyite, fluorite, duhamelite, sillenite, and papagoite.

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

Named for the type locality at Alamos in the Alamos Municipality in Sonora, Mexico. Alamosite is a rare mineral that occurs in additional localities in the United States, Namibia, and Sweden. It occurs as a secondary mineral in oxidized lead-bearing base metal deposits in association with wulfenite, leadhillite, cerussite, anglesite, melanotekite, fleischerite, kegelite, hematite, diaboleite, phosgenite, willemite, shattuckite, and wickenburgite.

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