substrate supplement Gypsum(calcium sulfate) 500g   | Spore Spot

substrate supplement Gypsum(calcium sulfate) 500g

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Gypsum(calcium sulfate) 500g - Sporespot
Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO 4·2H₂O. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and drywall. Wikipedia
Crystal class: Prismatic (2/m); H-M symbol: (2/m)
Crystal system: Monoclinic
Crystal habit: Massive, flat. Elongated and generally prismatic crystals
Optical properties: Biaxial (+)
Solubility: Hot, dilute HCl
Mohs scale hardness: 1.5–2 (defining mineral for 2)
Space group: Monoclinic; Space group: I2/a


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