Zebra Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Category
Mineral (Silicate Variety)
Browse mineral (silicate variety) specimens identified by the Rock Identifier community.
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Yellow Jasper
Cryptocrystalline Quartz (SiO2)
sedimentary
Milky Quartz (Water-Worn Pebble)
Quartz (Silicon Dioxide, SiO2)
mineral
Yellow Chalcedony (Agate Pebble)
Silicon Dioxide (SiO2)
mineral
Jasper
Silicon Dioxide (SiO2)
sedimentary
Satin Spar (Selenite)
Gypsum (CaSO4·2H2O)
mineral
Quartz / Quartzite
Quartz (Silicon Dioxide, SiO2)
metamorphic
Grey Agate
Silicon Dioxide (SiO2) - variety: Agate/Chalcedony
mineral
Epidote
Calcium aluminum iron silicate hydroxide (Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Dragon Blood Jasper
Epidote-rich Quartzite (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH))
metamorphic
Chert (Septarian Concretion/Nodule)
Microcrystalline silica (SiO2) with carbonate mineral veining
sedimentary
Chert (Jasper variation)
Microcrystalline Quartz (SiO2)
sedimentary
Jasper with Quartz inclusions
Silicon Dioxide (SiO2) with varying mineral impurities
sedimentary
Mookaite Jasper
Silicified Radiolarite (SiO2 with iron impurities)
sedimentary
Basalt
Mafic Igneous Rock
igneous
Jasper
Jasper (Cryptocrystalline variety of Quartz, SiO2)
sedimentary
Amazonite
Tectosilicate (variety of Microcline), K(AlSi3O8)
mineral
Carnelian Agate
Silicon Dioxide (SiO2) - variety of Chalcedony
mineral
Agate (specifically Waterline or Onyx-type Agate)
Silicon Dioxide (SiO2) - variety Chalcedony
mineral
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Amethyst (Quartz variety)
Silicon Dioxide (SiO2) with iron impurities
mineral
Basalt with Amygdule
Aphanitic Mafic Volcanic Rock (Basalt) with Zeolite/Quartz Infill
igneous
Pyrite (Fool's Gold)
Iron Disulfide (FeS2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Chert (Microcrystalline or cryptocrystalline Quartz, SiO2)
sedimentary
Chert (Jasper/Flint variety)
Microcrystalline quartz (SiO2)
sedimentary
Jadeite
Jadeite (NaAlSi2O6)
metamorphic
Chert / Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
Sedimentary
Dendritic Agate (or Dendritic Opal)
SiO2 (for Agate), SiO2·nH2O (for Opal)
Mineral
Quartz with Muscovite Mica
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate Hydroxide Fluoride (KAl2(AlSi3O10)(F,OH)2)
mineral
Fluorite (left), Sodalite (middle), Dumortierite/Tumbled Quartzite (right)
Calcium Fluoride (CaF2), Sodium Aluminum Silicate Chloride (Na8(Al6Si6O24)Cl2), Aluminum Borosilicate (Al7(BO3)(SiO4)3O3)
mineral
Jasper (with Manganese or Iron inclusions)
Silicon Dioxide (SiO2)
sedimentary
Orthoclase Feldspar
Orthoclase (KAlSi₃O₈)
mineral
Black Onyx (Tumbled)
Silicon Dioxide (SiO2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Banded Gneiss (Variety of Gneiss)
Gneiss (specifically, a variety exhibiting prominent banding; mineral composition can vary, but often contains quartz, feldspar, mica, and amphibole)
Metamorphic Rock
Shale (possibly Carbonaceous or Oil Shale)
Laminated Mudstone (primarily clay minerals and quartz)
sedimentary
Jasper (Milky/Cream Variety)
Silicon Dioxide (SiO2) - variety of Chalcedony
sedimentary (chemical/biological)
Potassium Feldspar
Orthoclase (KAlSi3O8)
mineral