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MINERAL MATTERSMINERAL MATTERS
HOW TO IDENTIFY MINERALS

Introduction
Color
Streak
Transparency
Luster
Hardness
Cleavage
Fracture
Specific Gravity
Crystal Form

Mineral Matters
Regional Minerals

Specific Gravity

Specific gravity is the density of a mineral. Special equipment is usually needed to find out a mineralís exact specific gravity. With a little practice, you can guess a mineralís specific gravity by hand. Some mineral samples will feel heavier than others, even if all your samples are the same size. The heavier ones have a greater specific gravity. Here are some examples of common minerals and their specific gravity ranges:

Minerals Density Specific gravity
sulfur, graphite light 1-2
gypsum, quartz medium 2-3
fluorite, beryl medium heavy 3-4
corundum, most metal oxides heavy 4-6
native gold, platinum heaviest 19


Mineral Matters | Kids' Habitat

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