Milky Quartz / Chalcedony
Silicon Dioxide (SiO2)
mineral
Category
Mineral, Often Found As A Rock
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Granite River Rock
Intrusive igneous rock (composed mainly of quartz, alkali feldspar, and plagioclase)
igneous
Quartz with Sericite and Cinnabar
Silicon Dioxide (SiO2) with muscovite/sericite and mercury sulfide (HgS)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite River Stone
Quartzite (SiO2)
metamorphic
Chert (Jasper/Flint variety)
Microcrystalline Quartz (SiO2)
sedimentary
Green Chert
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Iron-rich sandstone or lateritic ironstone pebble
Ferruginous sandstone/ironstone, composed mainly of quartz (SiO₂) and iron oxides such as hematite (Fe₂O₃) and goethite (FeO(OH))
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Gravel and Sand Aggregate
Unconsolidated Clastic Sediment
sedimentary
Chert Pebble
Cryptocrystalline Quartz (SiO2)
sedimentary
Limonite (Ironstone Concretion)
Limonite (FeO(OH)·nH2O)
mineral/sedimentary
Massive Quartz (Milky or Gray)
Silicon Dioxide (SiO2)
mineral
Chert (variations include Flint/Jasper)
Chert (SiO2)
sedimentary
Synthetic Wolf Plush (Non-mineral)
Canis lupus similis (Prop material: Polyester & Synthetic fibers)
Synthetic material/Textile
Sandstone (Common Quartz Pebble/Rock)
Sedimentary rock / Quartz arenite
sedimentary
Quartz Geode (River Cobble)
Silicon Dioxide (SiO2)
mineral
Unakite
Epidotized Granite
metamorphic
Chert / Flint
Cryptocrystalline Quartz (SiO2)
sedimentary
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chert (often called Flint when dark)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granite
Granite (a common rock type, not a single mineral with a formula. Composed primarily of quartz, feldspar, and mica/amphibole).
igneous
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Unakite
Granite (altered hydrothermal)
igneous
Chert (varietal Flint)
Microcrystalline quartz (SiO2)
sedimentary
Sandstone (with Rock Art)
Sandstone (Clastic Sedimentary Rock)
sedimentary
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone (Painted)
Arenite (primarily SiO2)
sedimentary
Epidote
Epidote (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))
mineral
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone Pebble
Sedimentary quartz arenite
sedimentary
Granite
Intrusive Igneous Rock
igneous
Quartz with Chlorite inclusions
SiO2 with (Mg,Fe)3(Si,Al)4O10(OH)2⋅(Mg,Fe)3(OH)6
mineral
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2) with various iron-oxide inclusions
mineral
Nephrite Jade
Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)
metamorphic
Basalt with Granite Inclusions (Xenoliths)
Mafic igneous rock (Basalt) with Sialic minerals
igneous
Banded Sedimentary Rock (Wishbone Stone / Banded Quartzite or Limestone)
Silicified limestone or banded sedimentary rock with mineral veins
sedimentary