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Stack #4062453

QuestionAnswer
geologist specialist able to determine a type of mineral or rock
mineral naturally occurring, inorganic solid, with a specific chemical composition and crystalline structure
4,000 # of minerals found in Earth's crust
luster way that a mineral reflects light from its surface
hardness how easily a mineral can be scratched
streak color of a mineral when it is broken up and powdered; a mineral is rubbed against an unglazed porcelain plate
color most noticeable characteristic of a mineral
cleavage splits relatively easy and evenly along one or more flat planes
fracture break with rough or jagged edges
magnetism can pick up iron filings
specific gravity ratio of the mass of a substance to the mass of an equal volume of water
Moh's Scale used to determine the strength of a mineral
2.5 or less can be scratched with a fingernail
ore mineral that contains a useful substance
gemstone valuable mineral prized for rarity and beauty
igneous rock formed when magma or lava cools and minerals are crystallized.
sedimentary rock formed through weathering and erosion; contain fossils
fossils preserved remains of once living organisms
metamorphic rock formed when exposed to increases in temperature and pressure
erosion breaking down of rock over time; caused by water, glaciers, wind, living organisms
Created by: tjackat
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