Jasper (specifically Yellow and Red Jasper/Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Category
Browse sedimentary (man made) specimens identified by the Rock Identifier community.
Jasper (specifically Yellow and Red Jasper/Chert)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Limestone
Calcium Carbonate (CaCO3)
Mookaite Jasper
Silicified Radiolarite (SiO2)
Quartzite
Quartzite (SiO2)
Quartzite
Quartzite (primarily SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Iron-Stained Quartzite
Recrystallized Meta-Quartzite (primarily SiO2)
Anthracite Coal
High-rank coal (primarily Carbon, C)
Bituminous Coal
Bituminous coal (Organic Sedimentary Rock)
Chert / Flint
Microcrystalline or cryptocrystalline quartz (SiO2)
Limestone
Calcium Carbonate (CaCO3)
Chert (Arrowhead or Projectile Point)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
Brecciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
Fluorite Tower
Fluorite (Calcium Fluoride - CaF2)
Clear Quartz
Silicon Dioxide (SiO2) / Rock Crystal
Jasper
Silicon Dioxide (SiO2)
Blue Kyanite
Kyanite (Al2SiO5)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (Milky/Vein Quartz)
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Limestone
Calcium carbonate ( преимущественно CaCO3)
Jasper with Quartz inclusion
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Arid Sandy Loam
Arenosols / Regosols
Red Sandstone
Arenite (primarily Quartz with Iron Oxide coating)
Petrified Wood
Silicified Wood (SiO2)
Sandstone, Quartzite, and River Pebbles
Silicon Dioxide (SiO2) based Sedimentary/Metamorphic structures
Blue Kyanite
Kyanite (Al2SiO5)
Wallboard/Drywall (Gypsum-based)
Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O
Red Jasper
Jasper (Silicon Dioxide with Iron Oxide impurities, SiO2 + Fe2O3)
Jasper (Imperial Jasper style)
Silicon Dioxide (SiO2) with impurities
Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) with iron oxide impurities
Gray Quartz (Tumbled)
Silicon Dioxide (SiO2)
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Chert (Limestone-based)
Silicon Dioxide (SiO2)
Chert (Flint)
Silicon Dioxide (SiO2)
Zebra Marble
Metamorphosed Alabaster/Limestone (CaCO3)
Granite
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
Marble
Metamorphosed Limestone (principally CaCO3)
Petrified Wood
Silicified Wood (SiO2 - Quartz/Chalcendony replacing organic matter)
Quartzite
Quartzite (primarily SiO2)
Agate (Dyed High-Grade Polished Slice)
Silicon dioxide (SiO2), Chalcedony crystal variety