Sandstone (Banded)
Arenite (primarily SiO2)
sedimentary
Category
Man Made Glass (Often Grouped With Minerals In Lapidary)
Browse man made glass (often grouped with minerals in lapidary) specimens identified by the Rock Identifier community.
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Smoky Quartz Geode Slice
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Banded Iron Formation
Banded Iron Formation (BIF)
sedimentary
Banded Chert (Ironstone type)
Silicon Dioxide (SiO2) with Iron Oxide inclusions
sedimentary
Quartz (Clear/White)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Oxide
Quartz (Silicon Dioxide, SiO2) with Limonite/Goethite staining
mineral
Strawberry Quartz (Hematoid Quartz)
Silicon Dioxide with Hematite inclusions (SiO2 + Fe2O3)
mineral
Jasper with Quartz Vein
Microcrystalline quartz (SiO2) and chalcedony with a quartz vein
sedimentary
Common Opal
Hydrated silica (SiO2 " nH2O)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (Gravel fragment)
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace elements of titanium, iron, or manganese
mineral
Chert (variations include Flint or Jasper)
Silicon Dioxide (SiO2)
sedimentary
Ferruginous Quartz
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
mineral
White Marble
Recrystallized Calcite (CaCO3)
metamorphic
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Rough Quartz (Alluvial Pebbles)
Silicon Dioxide (SiO2)
mineral
Potassium Feldspar (Orthoclase)
KAlSi3O8 (Potassium Aluminum Silicate)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Black Agate (Banded)
Silicon Dioxide (SiO2)
Mineral
Red Jasper (Chalcedony)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with Goethite/Iron oxide inclusions
sedimentary
Lepidolite in Quartz (or Lepidolite Ore)
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) in Quartz (SiO2)
igneous
Jasper
Silicon dioxide (SiO2) with impurities
sedimentary
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Limonite streaks)
sedimentary
Milky Quartz with Mica Matrix
SiO2 (Silicon Dioxide) with Muscovite/Biotite mica
mineral
Chert with Epidote and Jasper inclusions
SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions
sedimentary
Chert (Flint)
Cryptocrystalline Quartz (SiO2)
sedimentary
Malachite in Matrix
Copper Carbonate Hydroxide - Cu2CO3(OH)2
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Chert / Red Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Chert (Jasper/Chalcedony variety)
Silicon Dioxide (SiO2)
sedimentary
Bull Quartz (Milky Quartz)
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine/Quartzite Pebble)
Silicon Dioxide (SiO2)
mineral
Lace Agate
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Sandstone Beach Pebble
Clastic Sedimentary Rock (primarily Quartz with Iron Oxide coating)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary