http://www.galleries.com/Bornite WebCleavage: Indiscernible: Fracture: Uneven: Tenacity: Brittle: Other ID Marks: Tarnishes to an iridescent purple, blue, and red. Complex Tests: Soluble in nitric acid, tingeing the …

Bornite mineral information and data - Dakota Matrix

WebPhysical Properties of Bornite : Cleavage: {111} Imperfect : Color: Copper red, Bronze brown, Purple. Density: 4.9 - 5.3, Average = 5.09 : Diaphaneity: Opaque : Fracture: Conchoidal - Fractures developed in brittle materials characterized by smoothly curving … WebBORNITE. HISTORY, NAME, LOCALITIES: Bornite, pronounced BORN-ite, was recognized as a mineral species in 1725 and named for the Austrian mineralogist Ignaz von Born. ... no appreciable cleavage, an uneven-to-conchoidal fracture, and a substantial specific gravity of 4.9-5.1. Its copper-red to bronze-brown color is almost always masked … child\u0027s hat pattern sewing

BORNITE (Copper Iron Sulfide) - Amethyst Galleries

WebProperties. Bornite can be identified in the field by its color variations of copper red, bronze brown and purple. Its opaque form has {111} imperfect cleavage. This mineral has a metallic luster with a grayish black streak. The fracture of this mineral is conchoidal. The density of bornite is 4.9 – 5.3 g/cm 3 with a hardness of 3 ... WebBornite Cu5FeS 4 c 2001-2005 Mineral Data Publishing, version 1 Crystal Data: Orthorhombic, pseudocubic. Point Group: 2/m 2/m 2/m. Crystals pseudocubic, dodecahedral, octahedral, to 6 cm; commonly granular, compact, or massive, disseminated. Twinning: On {111}; commonly shows penetration twins. Physical Properties: Cleavage: … WebApr 1, 2024 · At 700 °C, melts are entirely crystallized, though two extensive solid solution fields are noteworthy: first, the intermediate solid solution (ISS) that includes chalcopyrite and other phases close to CuFeS 2 in composition; second, the field around bornite (bn). child\u0027s head silhouette