Search results
Results from the WOW.Com Content Network
Amethyst crystals – a purple quartz Apophyllite crystals sitting right beside a cluster of peachy bowtie stilbite Aquamarine variety of beryl with tourmaline on orthoclase Arsenopyrite from Hidalgo del Parral, Chihuahua, Mexico Aurichalcite needles spraying out within a protected pocket lined by bladed calcite crystals Austinite from the Ojuela Mine, Mapimí, Durango, Mexico Ametrine ...
Also called Indianite. A mineral from the lime-rich end of the plagioclase group of minerals. Anorthites are usually silicates of calcium and aluminium occurring in some basic igneous rocks, typically those produced by the contact metamorphism of impure calcareous sediments. anticline An arched fold in which the layers usually dip away from the fold axis. Contrast syncline. aphanic Having the ...
Four methods of nomenclature are used: [3] [5] The initial letters of a name, for example: cyanotrichite: Cya and mitscherlichite: Mits. A combination considered characteristic of the mineral name, for example: ewingite: Ewg and neighborite: Nbo. A selection of letters expressing components of the name, for example: adranosite = Arn and ...
The part of an ore that is not economically desirable and that cannot be avoided in mining is known as gangue. [2] [3] The valuable ore minerals are separated from the gangue minerals by froth flotation, gravity concentration, electric or magnetic methods, and other operations known collectively as mineral processing [5] [7] or ore dressing. [8]
Ore (pronoun) (俺), a Japanese form of me; Operation Ore, a British police operation targeting child pornography; Object Reuse and Exchange, an Internet standard; Orange Municipal Airport, by FAA LID airport code; Orthographic Reform of English (OR-E), an English-language spelling reform
In geology, a lens or lentil is a body of ore or rock that is thick in the middle and thin at the edges, resembling a convex lens in cross-section. [1] To thin out in all directions is to "lens out", also known as "lensing". The adjectives "lenticular" and "lentiform" are used to describe lens-like formations.
A stringer lode is one in which the rock is so permeated by small veinlets that rather than mining the veins, the entire mass of ore and the enveined country rock is mined. It is so named because of the irregular branching of the veins into many anastomosis stringers, so that the ore is not separable from the country rock. [5]
Bornite, also known as peacock ore, is a sulfide mineral with chemical composition Cu 5 Fe S 4 that crystallizes in the orthorhombic system (pseudo-cubic). It is an important copper ore. It is an important copper ore.