Properties of Minerals
5 Characteristics of Minerals Naturally occurring - Inorganic - Solid - Crystal Structure - Definite chemical composition Not Man Made Must come from abiotic factors Definite shape & volume Repeating patterns “faces” Contains certain elements in definite proportions
According to the definition of a mineral, can water be classified as a mineral? Explain.
Identifying Minerals Hardness Color Streak Luster Density Crystal Systems Cleavage and Fracture Special Properties http://www.minsocam.org/MSA/K12/properties/minpropindex.html
Compare and Contrast quartz and sulfur.
How are cleavage and fracture similar? Different?
Why can’t you rely on any single test or property to identify a mineral?
Formation of Minerals 2 methods Crystallization of melted materials. Size of Crystals depends on … Crystallization of melted materials. Crystallization of materials dissolved in H2O Rate of magma cooling Amount of gas magma contains Composition of magma
Valuable for color, luster, rarity, durability Minerals Resources Metals Gemstones Valuable for color, luster, rarity, durability Found in Food Medicines Fertilizers Building Materials http://www.minsocam.org/MSA/K12/uses/uses.html