Dolomite is a beautiful mineral that is White, Pink, Colorless, Tan, Gray or Yellow in color. Crystals of dolomite can form rhombohedral shapes that look like a squished cube. Identifying Dolomite rocks is fun when you learn how geologists use different properties of the rock to determine its name. You can learn to identify rocks like a real rockhound using color, crystal shape, streak, luster, density, and location in metamorphic rocks.
Dolomite has rhombohedral cleavage and may have a conchoidal fracture, creating a spiral pattern on the crystal when it’s broken. Dolomite is a 3.5 to 4 on the Mohs hardness scale, has a white streak, and a glassy to pearly luster. Dolomite is used in construction as building stones and a soil conditioner for garden crops. Dolomite forms in ocean settings in sedimentary rocks and hydrothermal veins. Also associated with metamorphic rocks. Dolomite will fizz in acid but not as strongly as the mineral calcite.
Tracy Jones, the professional geologist at Mini Me Geology is ready to show you examples of Dolomite minerals and teach you how to identify the minerals in your collection.
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