Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Category
Mineral (Evaporite)
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Learn about Mineral (Evaporite) in the encyclopedia
View all →
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Peach Selenite / Orange Gypsum
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Selenite (Satin Spar)
Gypsum (CaSO4·2H2O)
mineral
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
sedimentary
Pink Himalayan Salt Rock (Halite)
Halite (Sodium Chloride, NaCl)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Red Dyed Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Satin Spar (commonly sold as Selenite)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Satin Spar (often marketed as Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
mineral
Howlite
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Howlite (Dyed Turquoise)
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
mineral
Halite (Rock Salt)
Halite (NaCl)
mineral
Angelite
Anhydrite (CaSO4)
mineral
Breciated Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
Mineral
Rock salt (Halite)
Halite (Sodium Chloride, NaCl)
sedimentary
White Salt Crystal Lamp (Halite)
Halite (Sodium Chloride, NaCl)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Blue Howlite
Dyed Howlite (Ca2B5SiO9(OH)5)
mineral
Howlite
Howlite (Ca2B5SiO9(OH)5)
mineral
Howlite and Purple Amethyst Druzy
Calcium Borosilicate Hydroxide (Howlite) and Silicon Dioxide (Quartz/Amethyst)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Sulfur
Native Sulfur (S8)
mineral
Gypsum (Selenite crystals in Halite/Clay matrix)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Dyed Howlite (often sold as 'Turquenite')
Calcium Borosilicate Hydroxide (Ca2B5SiO9(OH)5)
mineral
Celestine (Celestite)
Strontium sulfate (SrSO4)
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Celestite (Celestine)
Strontium Sulfate (SrSO4)
mineral
Angelite
Anhydrite (Calcium Sulfate, CaSO4)
mineral
Howlite
Calcium borosilicate hydroxide (Ca2B5SiO9(OH)5)
mineral
Himalayan Pink Salt
Halite (NaCl)
sedimentary
Celestine
Celestine (Strontium Sulfate, SrSO4)
mineral
Howlite (White Buffalo Turquoise)
Howlite (Calcium Borosilicate Hydroxide), Ca2B5SiO9(OH)5
mineral
Satin Spar
Fibrous Gypsum (CaSO4·2H2O)
mineral