Earth's Art: Crystals and Fossils

Satin Spar Gypsum Meaning & Properties

Satin Spar Gypsum Meaning & Properties

Vidal Dias

Properties of Satin Spar Satin Spar is a fibrous gypsum with Silky luster.  Mineral Group Sulfate Cleavage Perfect Chemical Composition  CaSO4 · 2H2O Fracture  Splintery, Conchoidal Luster  Silky Diaphaneity Transparent to...

Satin Spar Gypsum Meaning & Properties

Vidal Dias

Properties of Satin Spar Satin Spar is a fibrous gypsum with Silky luster.  Mineral Group Sulfate Cleavage Perfect Chemical Composition  CaSO4 · 2H2O Fracture  Splintery, Conchoidal Luster  Silky Diaphaneity Transparent to...

Celestite Meaning and Properties

Celestite Meaning and Properties

Vidal Dias

Properties of Celestite Mineral Group Sulfate Cleavage Perfect Chemical Composition  SrSO4 Fracture  Irregular/uneven Luster Vitreous, pearly Diaphaneity Transparent, translucent Color Colourless, shades of light blue, white, reddish, greenish, brownish, grayish...

Celestite Meaning and Properties

Vidal Dias

Properties of Celestite Mineral Group Sulfate Cleavage Perfect Chemical Composition  SrSO4 Fracture  Irregular/uneven Luster Vitreous, pearly Diaphaneity Transparent, translucent Color Colourless, shades of light blue, white, reddish, greenish, brownish, grayish...

Halite

Halite

Vidal Dias

Properties of Halite Mineral Group Halide Cleavage Perfect Chemical Composition  NaCl Fracture  Conchoidal Luster Vitreous Diaphaneity Transparent to translucent Color Colorless or white when pure; impurities produce any color but...

Halite

Vidal Dias

Properties of Halite Mineral Group Halide Cleavage Perfect Chemical Composition  NaCl Fracture  Conchoidal Luster Vitreous Diaphaneity Transparent to translucent Color Colorless or white when pure; impurities produce any color but...

Bismuth crystal

Bismuth Meaning & Properties

Vidal Dias

Properties of Bismuth Mineral Group Native Semimetals  Cleavage Perfect Chemical Composition  Bi Fracture  Uneven Luster Metallic Diaphaneity Opaque Color Reddish-white to creamy-white; tarnishes iridescent pinkish, yellowish or bluish Streak Silver...

Bismuth Meaning & Properties

Vidal Dias

Properties of Bismuth Mineral Group Native Semimetals  Cleavage Perfect Chemical Composition  Bi Fracture  Uneven Luster Metallic Diaphaneity Opaque Color Reddish-white to creamy-white; tarnishes iridescent pinkish, yellowish or bluish Streak Silver...

Vesicular Basalt Meaning & Properties

Vesicular Basalt Meaning & Properties

Vidal Dias

Vesicular basalt or lava stone is a dark-colored volcanic rock with numerous tiny pores known as vesicles. A vesicle is a tiny hollow in a volcanic rock created by the...

Vesicular Basalt Meaning & Properties

Vidal Dias

Vesicular basalt or lava stone is a dark-colored volcanic rock with numerous tiny pores known as vesicles. A vesicle is a tiny hollow in a volcanic rock created by the...

Pink Tourmaline ((Rossmanite) Meaning and Properties

Pink Tourmaline ((Rossmanite) Meaning and Prope...

Vidal Dias

Properties of Pink Tourmaline (Rossmanite) Mineral Group Cyclosilicates Cleavage Indistinct Chemical Composition  ◻(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH) Fracture  Irregular/Uneven, Conchoidal Luster Vitreous Diaphaneity Transparent to translucent, nearly opaque Color Pale Pink to Colorless  Streak...

Pink Tourmaline ((Rossmanite) Meaning and Prope...

Vidal Dias

Properties of Pink Tourmaline (Rossmanite) Mineral Group Cyclosilicates Cleavage Indistinct Chemical Composition  ◻(LiAl2)Al6(Si6O18)(BO3)3(OH)3(OH) Fracture  Irregular/Uneven, Conchoidal Luster Vitreous Diaphaneity Transparent to translucent, nearly opaque Color Pale Pink to Colorless  Streak...