Minerals Set #1

Bauxite

Color Beige, yellow, white, gray, brown, reddish-brown, pink Streak White Hardness 1 - 3

Sphalerite

Color Black, brown, red, orange, yellow, green, gray. Rarely colorless. Some specimens contain crystals of different colors, and there is also a brown, globular, banded variety. Streak Pure Sphalerite has a white streak. However, impurities are almost always present, giving this mineral a light brown streak. The streak will always be a lighter color than the specimen. Hardness 3.5 - 4

Hematite

Color Black, gray to silver gray, brown to reddish brown, red. Some specimens are iridescent, and other are multicolored or banded gray and dark red. Streak Red to reddish brown Hardness 5 - 6

Azurite

Color Blue to very dark blue Streak Light blue Hardness 3.5 - 4

Celestine

Color Blue, white, colorless, orange, orange-brown, light brown, yellow, greenish-blue, gray. Crystals may also be slightly multicolored, with light blue on one end and colorless on the other. Streak White Hardness 3 - 3.5

Chalcopyrite

Color Brass yellow to golden yellow; sometimes dark brown to black. Tarnishes to a multicolored purple, blue, and red. Streak Black with a slightly green tinge Hardness 3.5 - 4

Sulfur

Color Bright yellow to yellow-brown Streak White Hardness 1.5 - 2.5

Aragonite

Color Colorless, white, brown, gray, yellow, red, pink, purple, orange, blue, green Streak White Hardness 3.5 - 4

Alabaster

Color Colorless, white, gray, brown, beige, orange, pink, yellow, light red, green Streak White Hardness 2

Satin Spar

Color Colorless, white, gray, brown, beige, orange, pink, yellow, light red, green Streak White Hardness 2

Selenite

Color Colorless, white, gray, brown, beige, orange, pink, yellow, light red, green Streak White Hardness 2

Dolomite

Color Colorless, white, gray, peach, pink, yellow, and orange. Rarely yellow, green, red, and black. Streak White Hardness 3.5 - 4

Halite

Color Colorless, white, red, yellow, orange, pink, blue, violet, green, and gray. May also be multicolored with a solid and clear color such as blue and white. Streak White Hardness 2 - 2.5

Diamond

Color Colorless, white, yellow, and brown, gray, and black. Colorless Diamonds are usually lightly tinged with yellow, orange or brown. Rarely blue, green, red, orange, pink, or purple. Streak White Hardness 10

Apatite

Color Colorless, white, yellow, brown, gray, red, pink, purple, blue, green. Some specimens are multicolored. Streak White Hardness 5

Calcite

Color Colorless, white, yellow, brown, orange, pink, red, purple, blue, green, gray, black. May also be multicolored or banded. Streak White Hardness 3

Barite

Color Colorless, white, yellow, orange, red, pink, purple, brown, blue, green, gray, and black. May also be multicolored and banded. Streak White Hardness 3 - 3.5

Copper

Color Copper-red to brown. Tarnishes green, sometimes also blue, brown, red, or black. Streak Copper-red. Streak shiny. Hardness 2.5 - 3

Bornite

Color Copper-red to yellowish brown on fresh surfaces. Quickly tarnishes to a multicolored purple, blue, and red. Streak Dark gray to black Hardness 3 - 3.5

Magnetite

Color Dark gray to black Streak Black Hardness 5.5 - 6.5

Fluorite

Color Fluorite occurs in all colors, including colorless, white, purple, blue, red, pink, orange, yellow, brown, green, gray, and black. May also be multicolored and banded. Streak White Hardness 4

Gold

Color Golden yellow to brass yellow Streak Golden yellow Hardness 2.5 - 3

Malachite

Color Light to dark green, sometimes banded with darker and lighter shades of green, and sometimes sparkling. Streak Light green Hardness 3.5 - 4

Corundum

Color Many colors, including blue, red, violet, pink, green, yellow, orange, gray, white, colorless, and black. Occasionally also multicolored or striped. Streak White Hardness 9

Graphite

Color Silver-gray to black Streak Black Hardness 1 - 2

Silver

Color Silver-white on untarnished surfaces. Tarnishes dark yellow to black. Streak Silver-white to light gray. Streak shiny. Hardness 2.5 - 3

Galena

Color Steel-gray Streak Steel-gray Hardness 2.5 - 3

Ulexite

Color White to light gray Streak White Hardness 2.5

Limonite

Color Yellow, brown, reddish-brown. Occasionally iridescent in a play of colors. Streak Yellow to brown Hardness 4 - 5.5

Pyrite

Color Yellowish gray to gray. Some specimens oxidize and form a yellow-brown or iridescent film on exposed crystal faces. Streak Black with a slightly green tinge Hardness 6 - 6.5