Aragonite Star Cluster
Aragonite (Calcium Carbonate, CaCO3)
mineral
Category
Man Made Object (Simulant)
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Bauxite
Bauxite (Al(OH)3, AlO(OH))
sedimentary
Coquina
Bioclastic Limestone (Calcium Carbonate, CaCO3)
sedimentary
Coquina
Biogenic Limestone (mostly Calcium Carbonate, CaCO3)
sedimentary
Polished ocean jasper or orbicular chalcedony
Microcrystalline quartz (SiO₂), likely chalcedony with feldspar or other mineral inclusions
mineral
Quartz
Silicon Dioxide (SiO₂)
Mineral
Diabase (Greenstone)
Diabase (Dolerite)
igneous
Banded Jasper
Silicon Dioxide with Iron Oxide Inclusions (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint)
Chert (Cryptocrystalline Quartz, SiO2)
sedimentary
Pallasite Meteorite
Pallasite (Stony-Iron Meteorite)
meteorite
Smoky Quartz
Smoky Quartz (Silicon Dioxide - SiO2)
mineral
Sandstone
Sedimentary Rock (Quartz Sandstone)
sedimentary
Lapis Lazuli
Lapis Lazuli (a rock, not a single mineral; primary mineral is Lazurite (Na,Ca)8(AlSiO4)6(S,SO4,Cl)1-2
Metamorphic rock
Geode (Unopened)
Quartz Geode (SiO2) / Chalcedony Concretion
mineral
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Sandstone
Arenite
sedimentary
Basalt
Basalt (containing plagioclase, pyroxene, and olivine)
igneous
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Diamond (Rough)
Diamond (Carbon, C)
Mineral
Calcite
Calcium Carbonate (CaCO3)
mineral
Calcite (Honey Calcite and Agate)
Calcium Carbonate (CaCO3)
mineral
Tektite
Natural impact glass
meteorite
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Tumbled epidote-bearing rock (likely epidote–quartz–feldspar aggregate)
Epidote-rich metamorphic rock; minerals likely epidote (Ca₂(Al,Fe)₃Si₃O₁₂(OH), quartz, feldspar, and dark amphibole/biotite)
metamorphic
Polished dendritic agate or jasper
Microcrystalline quartz (SiO₂), likely chalcedony with manganese-oxide dendrites
mineral
Crushed Stone / Gravel
Aggregatus saxum (variable mineral composition)
sedimentary
Tumbled jasper, likely picture jasper or brecciated jasper
Microcrystalline quartz (SiO₂), chiefly chalcedony with iron-oxide pigments
mineral
Polished yellow jasper or opaque chalcedony bead
Microcrystalline quartz (SiO₂), likely iron-oxide-stained jasper
mineral
Tumbled green aventurine
Quartzite dominated by quartz (SiO₂), with green mica/fuchsite inclusions
mineral
Yellow jasper (likely ocean jasper or brecciated jasper)
Jasper, microcrystalline quartz (SiO₂) with iron-oxide staining and dark mineral veins
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
gemstone
Petrified Wood
Silicified Wood (SiO2)
fossil
Petrified Wood
Silicified wood (primarily quartz, SiO2)
fossil
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Aventurine
Quartz with fuchsite inclusions (SiO2)
mineral
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Agate
Silicon dioxide (chalcedony variety), SiO2
sedimentary
Unakite
Altered Granite (Epidotized Granite)
metamorphic
Green Banded Calcite
Calcite (Calcium Carbonate, CaCO3)
mineral
Petrified Wood
Silicified Wood (SiO2)
fossil