VARIETIES
of MINERALS
BERYL
BERYL
Ø GOSHENITE (COLORLESS) – PURE BERYL
Ø AQUAMARINE (BLUE) – Fe2+
Ø EMERALD (GREEN) – Cr
Ø HELIODOR (YELLOW) – Fe3+
Ø MORGANITE (PINK) – Mn2+
Ø BIXBITE (RED) – Mn3+
QUARTZ
QUARTZ
Ø ROCK CRYSTAL (CLEAR) – PURE Quartz
Ø AMETHYST (PURPLE) – Fe
Ø ROSE QUARTZ (PINK) – Pink Dumortierite
Ø CITRINE (YELLOW) – Fe3+
Ø MILKY QUARTZ (MILKY WHITE) – abundant minute fluid inclusions
Ø SMOKY QUARTZ (BROWN-BLACK) –
IRRADIATION OF Qz w/ TRACE AMTS OF Al
Ø VERMARINE/ AVENTURINE (GREEN)
SILICA
SILICA
Ø MOGANITE – variety of silica found in microcrystalline quartz
Ø CHALCEDONY – fibrous microcrystalline quartz and moganite
Ø CARNELIAN – reddish-orange chalcedony
Ø AGATE – multi-colored banded chalcedony
Ø ONYX –
agate where the bands are straight, parallel and consistent in size
CHERT
CHERT
Ø JASPER (RED) – Fe3+
Ø FLINT (BLACK) – Organic Matter
CORUNDUM
CORUNDUM
Ø RUBY (RED) - Cr
Ø SAPPHIRE (BLUE) - Fe and Ti
OLIVINE (forsterite)
OLIVINE (forsterite)
Ø PERIDOT (OLIVE GREEN) - Fe
CHRYSOBERYL
CHRYSOBERYL
Ø ALEXANDRITE (Displays COLOR Change
which depend on lighting)
Ø CYMOPHANE (YELLOW) - Fe3+
GYPSUM
GYPSUM
Ø SELENITE – crystalline,
transparent, colorless
Ø
ALABASTER – Massive Gypsum, transluscent
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