Flagstone
Sedimentary Sandstone / Flagstone
sedimentary
Category
Sedimentary (If Natural Jasper) Or Artificial (If Slag)
Browse sedimentary (if natural jasper) or artificial (if slag) specimens identified by the Rock Identifier community.
Learn about Sedimentary (If Natural Jasper) Or Artificial (If Slag) in the encyclopedia
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Shale (Beach-worn)
Laminated Pelite (primarily clay minerals and quartz)
sedimentary
Jasper
Silicon dioxide (SiO2)
Mineral/Sedimentary
Jasper
Silicon Dioxide (SiO2) with impurities
sedimentary
Sandstone
Arenite (SiO2 based clastic rock)
sedimentary
Jasper
SiO2
Sedimentary
Dalmatian Jasper
Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite
igneous
Dalmatian Stone (Dalmatian Jasper)
Dalmatian Stone (A variety of Perthite / Aplite)
Igneous
Dalmatian Stone (often misnamed Dalmatian Jasper)
Aplite (with hornblende/arfvedsonite inclusions)
igneous
Jasper
Silicon Dioxide (SiO2), Microcrystalline Quartz
sedimentary
Puddingstone (Gowganda)
Gowganda Formation Conglomerate
sedimentary
Dalmatian Stone (often called Dalmatian Jasper)
Peralkaline Feldsphathic Igneous Rock
igneous
Dalmation Jasper
Dalmation Stone (perthitic feldspar with arfvedsonite)
igneous
Orbicular Rhyolite (Rainforest Jasper)
Rhyolite containing Spherulites (SiO2 with impurities)
igneous
Dalmatian Stone
Dalmatian Jasper (actually a Peralkaline Igneous Rock)
igneous
Dalmation Stone
Peralkaline rhyolite (SiO2 with Arfvedsonite/Riebeckite)
igneous
Polished dendritic jasper or agate slab
Microcrystalline quartz (SiO₂), likely jasper with chalcedony and iron/manganese dendrites
mineral
Tumbled jasper, likely red jasper
Microcrystalline quartz (SiO₂), chalcedony variety with iron-oxide impurities
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Polished/patinated jasper slab
Microcrystalline quartz (SiO₂), commonly chalcedony with iron-oxide and clay inclusions
sedimentary
Sandstone
Sedimentary Clastic Rock (Quartz Arenite)
sedimentary
Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Sandstone (likely Arkosic)
Clastic Sedimentary Rock (primarily SiO2 with Feldspar)
sedimentary
Tumbled carnelian
Carnelian, orange-red chalcedony (microcrystalline quartz, SiO₂)
gemstone
Polished orbicular jasper (likely ocean jasper)
Silicified microcrystalline quartz/chalcedony (SiO₂), with iron-oxide and other mineral inclusions
gemstone
Concrete fragment with Aggregate
Anthropogenic Concrete with Calcarious and Siliceous Aggregate
sedimentary (anthropogenic/man-made)
Rock Specimen
Unclassified rock specimen
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
K2 Jasper (K2 Granite)
Granite with Azurite inclusions (SiO2 + Cu3(CO3)2(OH)2)
igneous
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite inclusions
igneous
Dalmatian Stone
Peralkaline rhyolite with arfvedsonite (formerly incorrectly called Dalmatian Jasper)
igneous
Sandstone
Sandstone (Sedimentary rock composed of silicate grains)
sedimentary
Shale (or Mudstone)
Clay mineral aggregate / Fine-grained siliciclastic sedimentary rock
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
mineral
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Purple Jasper
Silica-rich Microcrystalline Quartz (SiO2)
sedimentary
Dalmatian Stone
Dalmatian Jasper (Aplitic Rock)
igneous
Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Orbicular jasper (orbicular chert), likely ocean jasper
Silicified microcrystalline quartz (chalcedony), SiO₂, with iron-oxide and/or clay-rich orbicules
sedimentary
Amber-colored Jasper
Silicon Dioxide (SiO2)
sedimentary
Seashell Fossil
Invertebrate Bivalve / Gastropod Fossil (Calcium Carbonate, CaCO3)
fossil