Rock Identifier

Category

Mineral (Evaporite)

Browse mineral (evaporite) specimens identified by the Rock Identifier community.

Learn about Mineral (Evaporite) in the encyclopedia

Halite

Rock Salt

Rock Gypsum

Glauconite

Hutcheonite

Sperrylite

Baddeleyite

Anatase

Brookite

Talc

Euxenite

Eltyubyuite

Satin Spar (Selenite) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — mineral

Satin Spar (Selenite)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Howlite (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Desert rose (Gypsum (selenite), CaSO₄·2H₂O, commonly forming rosette aggregates) — mineral

Desert rose

Gypsum (selenite), CaSO₄·2H₂O, commonly forming rosette aggregates

Pink halite (rock salt) (Halite (NaCl), likely iron-stained or impurity-colored) — mineral

Pink halite (rock salt)

Halite (NaCl), likely iron-stained or impurity-colored

Howlite, Lava Stone, and Hematite Bracelet (Hydrated calcium boro-silicate (Howlite) / Basalt (Lava Stone) / Iron oxide (Hematite)) — mineral

Howlite, Lava Stone, and Hematite Bracelet

Hydrated calcium boro-silicate (Howlite) / Basalt (Lava Stone) / Iron oxide (Hematite)

Angelite (Anhydrite (Calcium Sulfate, CaSO4)) — mineral

Angelite

Anhydrite (Calcium Sulfate, CaSO4)

Selenite (gypsum) crystal (Gypsum, CaSO₄·2H₂O; fibrous variety often called satin spar) — mineral

Selenite (gypsum) crystal

Gypsum, CaSO₄·2H₂O; fibrous variety often called satin spar

Likely selenite (gypsum) (Gypsum, CaSO₄·2H₂O; possibly a small satin-spar or selenite specimen) — mineral

Likely selenite (gypsum)

Gypsum, CaSO₄·2H₂O; possibly a small satin-spar or selenite specimen

Celestine (or Celestite) on Matrix (Celestine (SrSO4)) — mineral

Celestine (or Celestite) on Matrix

Celestine (SrSO4)

White gypsum (selenite/alabaster variety) (Gypsum, CaSO₄·2H₂O) — mineral

White gypsum (selenite/alabaster variety)

Gypsum, CaSO₄·2H₂O

White Salt Crystal Lamp (Halite) (Halite (Sodium Chloride, NaCl)) — mineral

White Salt Crystal Lamp (Halite)

Halite (Sodium Chloride, NaCl)

Desert rose (Gypsum rosette (selenite), CaSO₄·2H₂O) — mineral

Desert rose

Gypsum rosette (selenite), CaSO₄·2H₂O

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Wallboard/Drywall (Gypsum-based) (Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O) — sedimentary

Wallboard/Drywall (Gypsum-based)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Blue-dyed howlite (likely) (Howlite, Ca₂B₅SiO₉(OH)₅; dyed blue, often sold as imitation turquoise) — mineral

Blue-dyed howlite (likely)

Howlite, Ca₂B₅SiO₉(OH)₅; dyed blue, often sold as imitation turquoise

Angelite (Blue Anhydrite) (Anhydrite (CaSO4)) — mineral

Angelite (Blue Anhydrite)

Anhydrite (CaSO4)

Blue Howlite (Dyed Howlite (Ca2B5SiO9(OH)5)) — mineral

Blue Howlite

Dyed Howlite (Ca2B5SiO9(OH)5)

Howlite (Howlite (Ca2B5SiO9(OH)5)) — mineral

Howlite

Howlite (Ca2B5SiO9(OH)5)

Howlite and Purple Amethyst Druzy (Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)) — mineral

Howlite and Purple Amethyst Druzy

Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)

Satin Spar Selenite (Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)) — mineral

Satin Spar Selenite

Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Optical Calcite (Iceland Spar) (Calcite (Calcium Carbonate, CaCO3)) — mineral

Optical Calcite (Iceland Spar)

Calcite (Calcium Carbonate, CaCO3)

Dyed howlite or magnesite imitation-turquoise jewelry (Howlite: Ca₂B₅SiO₉(OH)₅; possibly magnesite: MgCO₃) — mineral

Dyed howlite or magnesite imitation-turquoise jewelry

Howlite: Ca₂B₅SiO₉(OH)₅; possibly magnesite: MgCO₃

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Sulfur (Native Sulfur (S8)) — mineral

Sulfur

Native Sulfur (S8)

Fibrous gypsum (selenite/satin spar) (Gypsum, CaSO₄·2H₂O; fibrous variety) — mineral

Fibrous gypsum (selenite/satin spar)

Gypsum, CaSO₄·2H₂O; fibrous variety

Desert rose gypsum (Gypsum (CaSO₄·2H₂O), forming rosette aggregates with sand inclusions) — mineral

Desert rose gypsum

Gypsum (CaSO₄·2H₂O), forming rosette aggregates with sand inclusions

Pink halite (rock salt) (Halite (NaCl)) — mineral

Pink halite (rock salt)

Halite (NaCl)

Satin Spar (Selenite) (Gypsum (CaSO4·2H2O)) — mineral

Satin Spar (Selenite)

Gypsum (CaSO4·2H2O)

Selenite (gypsum crystal) (Gypsum, CaSO₄·2H₂O; monoclinic crystal) — mineral

Selenite (gypsum crystal)

Gypsum, CaSO₄·2H₂O; monoclinic crystal

Dyed howlite (turquoise imitation) (Howlite, Ca₂B₅SiO₉(OH)₅; likely dyed blue) — mineral

Dyed howlite (turquoise imitation)

Howlite, Ca₂B₅SiO₉(OH)₅; likely dyed blue

Howlite (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Howlite (Dyed Turquoise) (Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite (Dyed Turquoise)

Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)

Howlite (Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)) — mineral

Howlite

Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)

Sulfur on Aragonite (Sulfur (S) on Aragonite (CaCO3)) — mineral

Sulfur on Aragonite

Sulfur (S) on Aragonite (CaCO3)

Gypsum (selenite variety) (Gypsum — calcium sulfate dihydrate, CaSO₄·2H₂O) — mineral

Gypsum (selenite variety)

Gypsum — calcium sulfate dihydrate, CaSO₄·2H₂O

Celestine (Celestite) (Strontium sulfate (SrSO4)) — mineral

Celestine (Celestite)

Strontium sulfate (SrSO4)

Pink Himalayan Salt Rock (Halite) (Halite (Sodium Chloride, NaCl)) — mineral

Pink Himalayan Salt Rock (Halite)

Halite (Sodium Chloride, NaCl)

Likely gypsum (selenite) (Gypsum, CaSO₄·2H₂O; probably a transparent-to-translucent selenite fragment) — mineral

Likely gypsum (selenite)

Gypsum, CaSO₄·2H₂O; probably a transparent-to-translucent selenite fragment

Halite (Rock Salt) (Halite (NaCl)) — mineral

Halite (Rock Salt)

Halite (NaCl)

Turquoise-look necklace (likely stabilized/reconstituted turquoise or dyed howlite) (Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; visual substitutes may be dyed howlite, Ca₂B₅SiO₉(OH)₅) — gemstone

Turquoise-look necklace (likely stabilized/reconstituted turquoise or dyed howlite)

Turquoise: hydrated copper aluminum phosphate, CuAl₆(PO₄)₄(OH)₈·4H₂O; visual substitutes may be dyed howlite, Ca₂B₅SiO₉(OH)₅