# data[].attributes.body
Fine grained, extrusive igneous rock that is usually light to dark gray in color. Rich in plagioclase feldspar minerals.

# data[].attributes.body
Extrusive rock, usually pink or gray in color with extremely fine grains. Composed of silica.

# data[].attributes.body
Dark, fine-grained, extrusive rock composed of plagioclase and pyroxene. Underlies more of Earth's surface than any other rock type.

# data[].attributes.body
Coarse, dark, intrusive rock. Usually black or green in color, composed mainly of plagioclase and augite.

# data[].attributes.body
Dark colored intrusive rock with vesicular texture. Composition of basalt.

# data[].attributes.body
Intrusive rock formed through slow cooling of magma, composed mainly of quartz and feldspar with small amounts of mica, amphiboles, and other minerals. Dark grains visible throughout the rock.

# data[].attributes.body
Extrusive rock with smooth texture formed through the rapid cooling of lava with a composition similar to rhyolite and granite.

# data[].attributes.body
Intrusive rock with vesicular texture formed through the rapid cooling of magma. Rhyolitic composition.

# data[].attributes.body
Hardness: 1.5-2.5
Color: yellow
Luster: greasy
Streak: yellow

# data[].attributes.body
Hardness: 1-2
Color: steel gray to black
Luster: metallic
Streak: black

# data[].attributes.body
Hardness: 2.5+
Color: silver
Luster: metallic on fresh surfaces, tarnishes dull
Streak: lead gray to black

# data[].attributes.body
Hardness: 5-6.5
Color: black to steel gray to silver; red to reddish brown
Luster: metallic, submetallic, earthy
Streak: red to reddish brown

# data[].attributes.body
Hardness: 5-6.5
Color: black to silvery gray
Luster: metallic to submetallic
Streak: black

# data[].attributes.body
Hardness: 6-6.5
Color: brass yellow
Luster: metallic
Streak: greenish black to brownish black

# data[].attributes.body
Hardness: 2.5-3
Color: black, brown, silver
Luster: pearly to glassy
Streak: white

# data[].attributes.body
Hardness: 3
Color: usually white but also colorless
Luster: glassy
Streak: white

# data[].attributes.body
Hardness: 6-6.5
Color: Usually white, pink, gray, brown
Luster: Glassy/pearly
Streak: White

# data[].attributes.body
Hardness: 7
Color: varying
Luster: glassy
Streak: colorless