Tags Minerals

Tag: Minerals

Covellite

Chemical Formula: CuS Locality: Monte Somma, Vesuvius, Naples, Naples province, Campania, Italy. Name Origin: Named after the Italian mineralogist, N. Covelli (1790-1829). Covellite (also known as covelline)...

Corundum

Chemical Formula: Al2O3 Locality: Tchainit and Yakutia, Russia. Name Origin: Probably derived from the Sanskrit, kuruvinda, meaning "ruby." Corundum is a crystalline form of aluminium oxide (Al2O3)...

Cornetite

Chemical Formula: Cu3(PO4)(OH)3 Locality: Star of the Congo mine, near Lubumbashi, and at the Kalabi and Lukini mines, Katanga Province, Congo (Shaba Province, Zaire). Name Origin:...

Cordierite

Chemical Formula: (Mg,Fe)2Al3(AlSi5O18) Locality: Bodenmais, Germany. Name Origin: From the French mining engineer and geologist P. L. A. Cordier (1777-1861). Cordierite (mineralogy) or iolite (gemology) is a...

Copper

Chemical Formula: Cu Locality: Northern Michigan, USA, Cyprus island, Greece. Name Origin: From the Greek, Kyprios, the name of the island of Cyprus, once producing this...

Cookeite

Chemical Formula: (Al2Li)Al2(AlSi3O10)(OH)8 Locality: Oxford Co., Maine, USA. Pala, San Diego Co., California, USA. Name Origin: Named for Josiah B. Cooke, Jr. (1827-1894), American mineralogist and...

Connellite

Chemical Formula: Cu19(SO4)(OH)32Cl4 · 3H2O Name Origin: Named after the Scottish chemist, A. Conell (1794-1863). Connellite is a rare mineral species, a hydrous copper chloro-sulfate, Cu19(OH)32(SO4)Cl4·3H2O,...

Columbite

Chemical Formula: (Fe,Mn)(Nb,Ta)2O6 Locality: Globe and Harding pegmatites, Taos County, New Mexico, USA. Name Origin: Named for the MANGANese content and the relationship to columbite (ferrocolumbite). Columbite,...

Calcite

Chemical Formula: CaCO3 Locality: Common world wide. Name Origin: From the Latin, calx, meaning lime. System: Trigonal Calcite is a carbonate mineral and the most stable polymorph of...

Azurite

Formula: Cu3(CO3)2(OH)2 Colour: Azure blue, blue, light blue, or dark blue; light blue in transmitted light Lustre: Vitreous Hardness: 3½ - 4 Specific Gravity: 3.77 Crystal System: Monoclinic Name: From...

Geode

Geodes  are geological secondary structures which occur in certain sedimentary and volcanic rocks. Geodes are essentially hollow, spherical to oblate masses of mineral matter...

Aegirine

Chemical Formula: NaFe3+Si2O6 Locality: Norway, Buskerud, Kongsberg. Magnet Cove, Hot Spring County, Arkansas. Name Origin: Named after the Teutonic god of the sea. Acmite is from...

Bismuth

Formula: Bi System: Trigonal Lustre: Metallic Hardness: 2 - 2½ Locality:  Schneeberg District, Erzgebirge, Saxony, Germany. Name Origin: Probably from the Arabic bi ismid, meaning having the properties of...

Albite

Chemical Formula: NaAlSi3O8 Locality: Finnbo, Falun, Dalarna, Sweden. Bourg d'Oisans and Isere, France. Name Origin: From the Latin, albus, in allusion to the common color. Albite is...

Acanthite

Chemical Formula: Ag2S Locality: Freiberg, Schneeberg, Annaberg, Germany. Name Origin: From the Greek, akanta, meaning "arrow." After the Latin, argentum, meaning "silver". Argentite is stable above...

Adamite

Chemical Formula: Zn2(AsO4)(OH) Locality: Chile, Atacama, Chañarcillo Name Origin: Named after the French mineralogist Gilbert Joseph Adam (1795-1881). Adamite is a zinc arsenate hydroxide mineral, Zn2(AsO4)(OH). It...

Actinolite

Chemical Formula: {Ca2}{(Mg,Fe2+)5}(Si8O22)(OH)2 Locality: Common world wide. Name Origin: From the Greek, aktinos, meaning "ray" in allusion to actinolite's fibrous nature. Actinolite is an amphibole silicate mineral...

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