Sunday, June 17, 2018

Varieties of Some Minerals (COLLECTED)


VARIETIES of MINERALS
            
            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
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
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
Ø  JASPER (RED)         – Fe3+
Ø  FLINT (BLACK)       – Organic Matter

CORUNDUM
Ø  RUBY (RED)           - Cr
Ø  SAPPHIRE (BLUE)  - Fe and Ti

OLIVINE (forsterite)
Ø  PERIDOT (OLIVE GREEN)   - Fe

CHRYSOBERYL
Ø  ALEXANDRITE (Displays COLOR Change which depend on lighting)
Ø  CYMOPHANE (YELLOW)    - Fe3+

GYPSUM
Ø  SELENITE – crystalline, transparent, colorless
Ø  ALABASTER – Massive Gypsum, transluscent

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