Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
Category
Mixed (Predominantly Sedimentary And Igneous)
Browse mixed (predominantly sedimentary and igneous) specimens identified by the Rock Identifier community.
River Cobbles (Basalt, Quartzite, and Sandstone mix)
Fluvial detritus (primarily SiO2, Plagioclase, and Pyroxene mix)
Mixed: Igneous and Sedimentary
Quartz (in matrix)
Quartz (SiO₂)
mineral
Sandstone
Arenite (Clastic Sedimentary Rock)
sedimentary
Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)
Silicon Dioxide (SiO2)
sedimentary and metamorphic minerals
Granite Cobble
Felsic intrusive igneous rock
igneous
Sandstone
Arenite (predominantly Quartz Sandstone)
sedimentary
Citrine
Silicon Dioxide (SiO2) - Macrocrystalline Quartz variety
mineral
Granite
Granite (High-silica plutonic rock)
Igneous
Snowflake Obsidian
Spherulitic Volcanic Glass (primarily SiO2 with Cristobalite inclusions)
igneous
Amethyst (Tumbled)
Amethyst (Silicon Dioxide with Iron impurities) - SiO2
mineral
Jasper (specifically Red or Brecciated Jasper variant)
Jasper (Microcrystalline Quartz - SiO2)
sedimentary
Rose Quartz
Silicon dioxide (SiO2)
mineral
Chondrite Meteorite
L3 Chondrite (Unequilibrated Ordinary Chondrite)
igneous
Chondrite Meteorite
Ordinary Chondrite (L or H type)
igneous
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Dream Amethyst (Chevron Amethyst)
Silicon Dioxide (SiO2) with iron impurities and gamma radiation exposure
Mineral
Moonstone
Orthoclase (KAlSi3O8), specifically the variety showing adularescence
mineral
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
mineral
Turquoise in Matrix
Hydrated phosphate of copper and aluminium (CuAl6(PO4)4(OH)8·4H2O)
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Granite
Granite (Phaneritic Quartz-Feldspar Felsic Rock)
igneous
Tiger Iron
Tiger Iron (composite of Tiger's Eye, Red Jasper, and Hematite)
metamorphic
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Chert (or Flint)
SiO2 (predominantly microcrystalline quartz)
Sedimentary
Fossiliferous Limestone (Crinoidal)
Bioclastic Limestone (predominantly CaCO3)
sedimentary
Bloodstone
Heliotrope (a variety of Cryptocrystalline Quartz / Jasper, SiO2)
mineral
Labradorite
Feldspar (Plagioclase Series), (Ca,Na)(Al,Si)4O8
mineral
Ooids (Oolites)
Ooids (composed of Calcium Carbonate / CaCO3)
sedimentary
Amethyst
Amethyst (Silicon Dioxide, SiO2)
mineral
Epidosite
Epidosite (Metasomatic rock consisting mainly of Epidote and Quartz)
metamorphic
Carnelian
Carnelian (a variety of Chalcedony), SiO2 (Silicon Dioxide)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Mineraloid
Gold
Native Gold (Au)
mineral
Gabbro
Gabbro (mafic intrusive igneous rock)
igneous
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Granite
Phaneritic intrusive igneous rock (composition: Quartz, Feldspar, Mica)
igneous
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral