Hydrothermal deposit - Study guides, Class notes & Summaries

Which geologic law explains the relative ages of rocks with respect to one another in a map or cross section? - ANSWER-Principle of Horizontality, Law of Superposition, Law of Cross-Cutting Relationships Surface exposure, in a temperate environment, of aluminum silicate minerals such as feldspar would result in the development of which of the following clay minerals? - ANSWER-Montmorillonite - a colloidal, hydrated aluminum silicate What geologic condition would produce slow drainage withi...

Which of the following is a gem variety? Assignment 1️️demantoid A substance that consists of atoms of only one kind is a. Assignment 1️️chemical element Which of the following is an organic gem? Assignment 1️️amber Many colored stones are mined by. Assignment 1️️independent miners using small-scale mining methods. Which group does almandine belong to? Assignment 1️️Garnet Synthetic gem materials. Assignment 1️️Are not mineral A broad gem category based on chemical...

By what date had Kokichi Mikimoto begun culturing whole pearls️️1908 Synthetic gem materials️️Are not minerals which of the following is an organic gem️️amber which of the following is amorphous️️amber a natural material that's made up of a mass of one or more kinds of mineral crystals is️️rock what group does alamandine belong to️️garnet A gem produced by, or derived from, a living organism is️️organic which of the following is a gem variety️️demantoid t...

Assay - ANSWER-An analysis of the proportions of metal in an ore. Composition, purity, weight, or other properties of economic interest are tested. Average Grade - ANSWER-The average quantity or percentage of ore mineral content in an ore body Base Metal - ANSWER-A common and chemically active metal (oxidizes or corrodes easily) - lead or copper for example Dispersion - ANSWER-The process by which elements more away from the enriched ore zone Dolomitization - ANSWER-The process by wh...

Assay - ANSWER-An analysis of the proportions of metal in an ore. Composition, purity, weight, or other properties of economic interest are tested. Average Grade - ANSWER-The average quantity or percentage of ore mineral content in an ore body Base Metal - ANSWER-A common and chemically active metal (oxidizes or corrodes easily) - lead or copper for example Dispersion - ANSWER-The process by which elements more away from the enriched ore zone Dolomitization - ANSWER-The process by wh...

rocks️️the raw materials of gemstone formation the continental crust️️most colored stones form in... gem formation️️geological conditions during mountain building are favorable for... slow cooling️️In igneous rocks, large crystals indicate quick cooling️️In igneous rocks, small crystals indicate volcanic rock️️What can transport existing gems from deep in the crust to the earth's surface? pegmatites️️Some of the largest and most perfect gem crystals come from.....