Halite
Halite (Sodium Chloride, NaCl)
mineral
Category
Sedimentary (Formed From Silica Deposits)
Browse sedimentary (formed from silica deposits) specimens identified by the Rock Identifier community.
Learn about Sedimentary (Formed From Silica Deposits) in the encyclopedia
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Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (with possible fossils)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Jasper)
Cryptocrystalline Quartz (SiO2)
sedimentary
Petrified Wood
Silicified wood (Quartz/Chalcedony replacement of cellulose)
fossil
Chert (Flint)
Microcrystalline Silicon Dioxide (SiO2)
sedimentary
Chert (Flint Nodules)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz on Matrix
Silicon Dioxide (SiO2)
mineral
Malachite
Malachite - Cu2CO3(OH)2
mineral
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Fossil bone, possibly a vertebra
Fossilized vertebrate bone; exact taxon cannot be determined from the image
fossil
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Chert
Microcrystalline quartz (SiO2)
sedimentary
Quartz crystal fragment
Quartz (silicon dioxide, SiO₂)
mineral
Chalcedony (likely brown agate or flint)
Microcrystalline quartz, SiO₂; chalcedony, possibly iron-stained
mineral
Chert (Jasper/River Rock)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Quartz geode
Microcrystalline quartz (SiO₂), commonly with chalcedony and possible calcite inclusions
mineral
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert (Flint)
Microcrystalline Quartz or Cryptocrystalline Silica (SiO2)
sedimentary
Red Jasper
Microcrystalline Quartz (SiO2 with Iron Oxide impurities)
sedimentary
Chert / Flint
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2 with iron oxide impurities)
sedimentary
Banded Chert (Flint/Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Milky/Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Mineral/Semiprecious Gemstone (variety of Quartz)
Jasper
Silicon Dioxide (Microcrystalline Quartz), SiO2
sedimentary
Flint
SiO2 (Microcrystalline Quartz / Chert)
sedimentary
Red Jasper
Silicon dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Weathered chert or silicified limestone
Microcrystalline quartz (SiO₂), possibly replacing carbonate rock
sedimentary
Chert (Yellow Jasper varieties)
Microcrystalline Quartz (SiO2)
sedimentary
Tumbled amber-colored chalcedony or jasper
Microcrystalline quartz (SiO₂), likely iron-stained chalcedony/jasper
mineral
Chert (Siliceous Mudstone variant)
Microcrystalline quartz (SiO2)
sedimentary
Chert (Yellow or Brown Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Iron-rich chert or jasper
Microcrystalline quartz (SiO₂), colored by hematite/goethite inclusions
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with Iron inclusions
sedimentary
Red Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Clear Quartz Crystal
Silicon Dioxide (SiO2)
mineral
Flint (chert), likely a worked stone flake
Microcrystalline quartz (SiO₂); cryptocrystalline variety of quartz
sedimentary