Satin Spar Gypsum
Calcium Sulfate Dihydrate (CaSO4·2H2O)
Mineral
Category
Mineral And Sedimentary
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Satin Spar (Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Pyrite on Quartz matrix
Iron Disulfide (FeS2) on Silicon Dioxide (SiO2)
mineral
Ironstone (Limonitic Concretion)
Limonite (FeO(OH)·nH2O) with Goethite and Hematite inclusions
sedimentary
Satin Spar (often marketed as Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Dragon Blood Jasper
Epidote-containing Quartz and Chlorite (SiO2 + (Ca2(Al, Fe)3(SiO4)3(OH)))
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
mineral
Satin Spar Selenite
Gypsum (Calcium Sulfate Dihydrate, CaSO4·2H2O)
mineral
Yellow Quartz (Iron-stained Quartz)
Quartz (Silicon Dioxide, SiO2) with Hematite/Limonite impurities
mineral
Rhodochrosite
Manganese Carbonate (MnCO3)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Satin Spar (Gypsum)
Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
mineral
Limonite Concretion
Goethite-Limonite (FeO(OH)·nH2O)
sedimentary
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Limonite Concretion
Limonite (FeO(OH)·nH2O)
sedimentary
Chert (with Limestone/Dolomite host)
Microcrystalline Quartz (SiO2)
sedimentary
Gypsum (Selenite crystals in Halite/Clay matrix)
Calcium Sulfate Dihydrate (CaSO4·2H2O)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Ironstone Concretion
Ironstone (primarily Siderite or Limonite / Goethite, FeO(OH)·nH2O)
sedimentary
Ironstone Concretion (Limonite/Goethite)
Ironstone (composed primarily of Goethite FeO(OH) and Limonite)
sedimentary
Pyrite
Iron Disulfide (FeS2)
mineral
Carnelian
Carnelian (SiO2 with Iron Oxide impurities)
mineral
Ferruginous Quartz (Carnelian-tinted Quartz)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
mineral
Satin Spar (often marketed as Selenite)
Fibrous Gypsum (CaSO4·2H2O)
mineral
Ironstone Concretion / Limonite Specimen
Goethite and Limonite (Hydrous Iron Oxides)
sedimentary
Satin Spar (commercially called Selenite)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
mineral
Orange Satin Spar (Satin Spar Selenite)
Satin Spar - Hydrous Calcium Sulfate (CaSO4·2H2O)
mineral
Ironstone Concretion (Limonite/Hematite Nodules)
Ironstone (principally Limonite FeO(OH)·nH2O or Hematite Fe2O3 mixed with silica/clay)
sedimentary
Ferruginous Quartz (Iron-stained Quartz)
Silicon Dioxide (SiO2) with Hematite/Goethite inclusions
mineral
Ironstone Concretion / Limonite
Goethite and Limonite (FeO(OH)·nH2O)
sedimentary
Pyrite
Iron Sulfide (FeS2)
mineral
Quartz
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Red Jasper
Red Jasper (variety of Chalcedony, SiO₂)
Mineral
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
Mineral
Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Quartz (Rock Crystal)
Quartz (SiO₂ - Silicon Dioxide)
Mineral
Quartz (White Pebble) and Sandstone (Brown/Tan Fragments)
Silicon Dioxide (SiO2) for the white pebble
mineral and sedimentary
Pyrite
Iron Pyrite (FeS2)
mineral
Yellow Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz, SiO₂)
Mineral
Clear Quartz (or Rock Crystal)
Quartz (SiO₂)
Mineral
Calcite
Calcite (Mineral, Calcium Carbonate - CaCO3)
Mineral