Quartz (Druzy)
Silicon Dioxide (SiO2)
Category
Browse sedimentary (secondary classification for a weathered mineral specimen) specimens identified by the Rock Identifier community.
Quartz (Druzy)
Silicon Dioxide (SiO2)
Chert (Banded)
Chert (Microcrystalline Silicon Dioxide, SiO2)
Basalt with Quartz/Calcite matrix
Basalt (SiO2 with Ca/Mg/Fe silicates) on a Mineral Matrix
Jasper Breccia
Brecciated Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)
Chert (often called Flint)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Staurolite
Staurolite (Fe2+2Al9Si4O23(OH))
Quartz (Orangey-white variety)
Silicon Dioxide (SiO2)
Quartz Druzy on Geode Fragment
Silicon Dioxide (SiO2)
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
Eye Agate
Silicon Dioxide (SiO2) - Banded Chalcedony
Carnelian
Carnelian (Silicon Dioxide - SiO2)
Quartz
Silicon dioxide (SiO2)
Fossiliferous Chert (with Fossil Shells)
Silicon Dioxide (SiO2) with biogenic inclusions
Quartzite
Quartzite (Primary mineral: SiO2)
Jasper
Silicon Dioxide (SiO2)
Malachite
Copper carbonate hydroxide Cu2CO3(OH)2
Silty Sand / Loam
Unconsolidated Clastic Sediment (Silicon Dioxide / Alumino-silicates mixture)
Orange Calcite
Calcium Carbonate (CaCO3)
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Petrified Dinosaur Bone (Gembone)
Agatized Dinosaur Bone
Epidote in Quartz
Epidote (Ca2(Al,Fe)3(SiO4)3(OH)) in Milky Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Carnelian Agate
Carnelian (Silicon Dioxide - SiO2 with Iron Oxide impurities)
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Quartz (specifically Milky or Clear Chunk)
Silicon Dioxide (SiO2)
Ferruginous Quartz
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Sandstone
Arenite (composed primarily of SiO2)
Silver (Native Element / Alloy)
Silver (Ag)
Amygdaloidal Basalt
Amygdaloidal Mafic Volcanic Rock (Basalt)
Orange Calcite
Calcite (Calcium Carbonate - CaCO3)
Gneiss
Gneiss
Heulandite with Stilbite
Heulandite-Ca ((Ca,Na)2-3Al3(Al,Si)2Si13O36·12H2O) and Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
Hematite
Iron (III) Oxide, Fe2O3
Blue Sapphire
Corundum (Al2O3 with trace Titanium and Iron)
Chert (often called Flint or Jasper when pigmented)
Microcrystalline or cryptocrystalline Quartz (SiO2)
Chert (Nodule)
Microcrystalline Quartz (SiO2)
Banded Sandstone (Quartzite-rich)
Clastic Sedimentary Rock (SiO2 with Iron Oxide impurities)
Blue Kyanite
Kyanite (Al2SiO5)
Quartz (Milky/Common)
Silicon Dioxide (SiO2)
Chert (Common Opal/Chalcedony)
Microcrystalline Quartz (SiO2)
Quartz Pebble
Silicon Dioxide (SiO2)
Quartzite with Garnet
Garnetiferous Quartzite (SiO2 + X3Y2(SiO4)3)