Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Category
Browse man made composite (lithified equivalent of sedimentary) specimens identified by the Rock Identifier community.
Green Slag Glass
Amorphous Silica / Glassy Blast Furnace Slag
Diamond (or Diamond Simulant)
Carbon (C)
Jasper (yellow/cream variety)
SiO₂ (Cryptocrystalline Quartz)
Diamond (as set in a metal alloy ring)
Diamond (Pure Carbon, C)
Fossilized Bone Fragment
Permineralized Vertebrate Bone (Hydrox yapatite replaced by Silica or Calcite)
Turquoise (beads)
Turquoise; CuAl6(PO4)4(OH)8·4H2O
Sandstone
Arenite (SiO2 principal)
Turquoise
Hydrated phosphate of copper and aluminium [CuAl6(PO4)4(OH)8·4H2O]
Pearl (Biogenic Mineraloid)
Calcium carbonate (Aragonite) and Conchiolin, CaCO3
Ironstone Concretion (Iron-rich Mudstone)
Siderite / Geothite concretion (FeCO3 / FeO(OH))
Quartz (likely milky quartz or a stained variety)
Silicon Dioxide (SiO₂)
Rhodonite
Rhodonite (MnSiO3)
Lazulite
Lazulite (Mg,Fe2+)Al2(PO4)2(OH)2
Quartz (beads)
SiO2 (Silicon Dioxide)
Sandstone
Arenite (primarily SiO2)
Dalmatian Stone
Peralkaline Quartz-Feldspar Rock
Granite Pebble
Granite
Quartz with Iron Stains
Quartz (SiO2) with iron oxide/hydroxide staining
Rough Diamond
Diamond (Pure Carbon: C)
Limestone
Sedimentary rock composed of Calcium Carbonate (CaCO3)
Stromatolite
Biogenic Sedimentary Rock (composed predominantly of CaCO3)
Sandstone
Clastic Sedimentary Rock (composed of SiO2 grains)
Sandstone (Gneissic or Banded)
Clastic Sedimentary Rock (composed predominantly of SiO2)
Flagstone (Sandstone)
Clastic Sedimentary Rock (composed of quartz and feldspar)
Diamond
Diamond (pure Carbon, C)
Orange Calcite
Calcite (CaCO3)
Sandstone
Arenite (composed mainly of SiO2)
Mookaite Jasper
Silicon Dioxide (SiO2) - Radiolarite
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
Ferruginous Sandstone (Ironstone)
Ferruginous Sandstone / Limonite-cemented Quartz Sandstone
Sandstone (Quartzose)
Arenite (composed primarily of SiO2)
Sandstone
Clastic sedimentary rock (primarily SiO2)
Dolomite
Dolomite (CaMg(CO3)2)
Sandstone (Micaceous)
Arenite (composed primarily of SiO2)
Quartz
Quartz (SiO2 - Silicon Dioxide)
Glauconitic Sandstone (Greenstone)
Glauconitic Siliciclastic Sandstone (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2
Kambaba Jasper (Crocodile Jasper)
Stromatolitic Rhyolite/Jasper (SiO2)
Sandstone (lithic wacke/arenite)
Clastic sedimentary rock (primarily SiO2)
Limestone (specifically a Crushed Aggregate fragment)
Calcium Carbonate (CaCO3)
Sandstone
Arenite (SiO2 primarily)
Quartz
Silicon Dioxide (SiO2)
Granite Pebble
Granite (Phaneritic Quartz-Feldspar Rock)