Bornite Archives - Cochise College Geology
Fracture: Conchoidal to uneven Tenacity: Brittle. Luster: Metallic Transparency: Opaque. Crystal Forms and Habits: Isometric system. Crystals are cubes or dodecahedrons. Bornite is usually found in massive form. Mineral Associations: Often occurs with chalcopyrite
Bornite Mineral Data
Conchoidal - Fractures developed in brittle materials characterized by smoothly curving surfaces, (e.g. quartz). Habit: Granular - Generally occurs as anhedral to subhedral crystals in matrix.
Bornite: Properties, Characteristics and Uses - Geossary
2023年1月26日 · irregular, conchoidal: Tenacity: Fragile. crystalline system: Orthorhombic. Way of presenting or habit: Compact, granular and massive. Origin and geological environment: High temperature hydrothermal (350°C to 500°C) associated with igneous intrusions. associated rocks: Mainly igneous rocks and pegmatites. Associated minerals
BORNITE (Copper Iron Sulfide)
Most common habit is massive or disseminated grains. Cleavage is very poor, octahedral. Fracture is conchoidal. Streak is a gray black. Other Characteristics: The tarnish that occurs on fresh surfaces can form in only hours and will become black over time.
斑銅礦 - 维基百科，自由的百科全书
斑铜矿 （英語： Bornite），又称 孔雀矿 或或 孔雀铜[5][6][7]，是一种 硫化物矿物，化学式为Cu 5 FeS 4，以 正交晶系 （拟立方）结晶。 斑铜矿 晶体 十分稀有，现发现的斑铜矿晶体呈假立方，或是更罕见的 十二面体 或 八面体，其晶面常常弯曲或粗糙不平。 更普遍的存在形式是致密的块状或颗粒状集合体。 [5][4][8][7] 斑铜矿新鲜断面呈暗铜红色，但表面易氧化而呈紫蓝斑杂的 虹彩。 [8] 一般而言，它破裂而无光泽的表面会显现紫色、蓝色和红色斑点， [7] 但与 黄铜矿 混合后会 …
All About Bornite – Uses, Properties, Color, and Worth
2021年1月29日 · Larger bornite crystals have been found in Tirol Austria in what is called the Frossnitz Alps. Other notable places bornite crystals have been found are Dzhezkazgan, Kazakhstan, Shaba, Congo, Mhangura, Zimbabwe. Some of the lesser areas where crystals have been found can be Connecticut and Montana USA.
Bornite - Crystals & Minerals Galore
Bornite, also known as peacock ore, is a sulfide mineral with chemical composition Cu5FeS4 that crystallizes in the orthorhombic system (pseudo-cubic). Bornite has a brown to copper-red color on fresh surfaces that tarnishes to various iridescent shades of blue to purple in places.
Bornite (Peacock Ore) – Occurrence, Properties, and Distribution
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 grayish black streak. The fracture on this mineral is conchoidal. The density of bornite is 4.9 - 5.3 g/cm 3 with a hardness of 3 – approximate to calcite ...
Bornite - Celestial Earth Minerals
It has a Mohs hardness of 3.0, 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 by a bright, iridescent, blue-green-purple-gold tarnish that …
- [PDF]
Minerals - VWR
Under blowpipe flame test on charcoal, bornite gives of odor of sulfur dioxide and becomes magnetic. Alters readily to chalcocite and covellite. A widely occurring copper ore usually found associated with other sulfides. Found disseminated in basic rocks, in contact metamorphic deposits, in replacements zones, and in pegmatites.
- 某些结果已被删除