secondary mineral formation

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• secondary mineral — noun (geology, mining) 1. A mineral formed after the formation of the rock enclosing it 2. A mineral of minor interest in an ore body undergoing exploitation • • • Main Entry: ↑second …   Useful english dictionary

• mineral deposit — Introduction       aggregate of a mineral in an unusually high concentration.       About half of the known chemical elements (chemical element) possess some metallic (metal) properties. The term metal, however, is reserved for those chemical… …   Universalium

• Mineral — For other uses, see Mineral (disambiguation). An assortment of minerals. A mineral is a naturally occurring …   Wikipedia

• Formation evaluation — In petroleum exploration and development, formation evaluation is used to determine the ability of a borehole to produce petroleum. Essentially, it is the process of recognizing a commercial well when you drill one .Modern rotary drilling usually …   Wikipedia

• Formation and evolution of the Solar System — Artist s conception of a protoplanetary disk The formation and evolution of the Solar System is estimated to have begun 4.568 billion years ago with the gravitational collapse of a small part of a giant molecular cloud …   Wikipedia

• secondary twinning — noun : the externally caused twinning of crystals (as by pressure in a rock mass after formation of the mineral) …   Useful english dictionary

• Marcellus Formation — Stratigraphic range: Middle Devonian …   Wikipedia

• Covellite — General Category Sulfide mineral Chemical formula copper …   Wikipedia

• Turquoise — For other uses, see Turquoise (disambiguation). Turquoise Turquoise (tumble finished) one inch (25 mm) long. This pebble is greenish and therefore low grade General …   Wikipedia

• cave — cavelike, adj. /kayv/, n., v., caved, caving. n. 1. a hollow in the earth, esp. one opening more or less horizontally into a hill, mountain, etc. 2. a storage cellar, esp. for wine. 3. Eng. Hist. a secession, or a group of seceders, from a… …   Universalium

• Dentin — Parts of a tooth, including dentine Dentine (AE: dentin) is a calcified tissue of the body, and along with enamel, cementum, and pulp is one of the four major components of teeth. Usually, it is covered by enamel on the crown and cementum on the… …   Wikipedia