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