Mineral 1.0: P

Mineral 1.0

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SilicatePlagioclase

CaAl₂Si₂O₈
Other names/forms:
Anothite (Ca), Albite (Na)

Most distinguishing features:
Parallel striations and white-gray colour separates this mineral from orthoclase (Kspar).
Industrial/economical uses:
Concrete, filler, sand, gravel, etc.

SulfidePyrite (crystalline)

FeS₂

Most distinguishing features:
Colour, hardness, streak and habit are best indicators. Gives off sparks when struck with a hard metal object.
Industrial/economical uses:
May be used as source of iron or sulfur, but not normally of economic value.

SulfidePyrite (massive)

FeS₂

Most distinguishing features:
Colour, hardness, streak and habit are best indicators. Gives off sparks when struck with a hard metal object.
Industrial/economical uses:
May be used as source of iron or sulfur, but not normally of economic value.

OxidePyrolusite

MnO₂

Most distinguishing features:
Will leave sooty marks if touched.
Industrial/economical uses:
Manganese is used to colour bricks.