Sandstone with Iron Staining
Clastic sedimentary rock (SiO2 with iron oxides)
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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Blue Chalcedony
Chalcedony (a cryptocrystalline variety of Quartz - SiO₂)
Mineral
Fancy Jasper (Butterfly Carving)
Silicon Dioxide (SiO2) with iron and manganese inclusions
sedimentary
Map Jasper (Picasso Stone)
Metamorphosed Calcium Carbonate (Crystalline Limestone or Marble with Silicate inclusions/impurities)
metamorphic
Chert
Microcrystalline silica (SiO2)
sedimentary
Chert (Flint variety)
Microcrystalline context of Quartz (SiO2)
sedimentary
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese
mineral
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral
Dragons Blood Jasper
Cryptocrystalline Quartz (SiO2/Epidote/Piemontite)
sedimentary
Green Aventurine
Quartz (Silicon Dioxide with Fuchsite inclusions - SiO2 + K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Banded Quartz
Silicon Dioxide (SiO2)
mineral
Quartz pebble
Silicon dioxide (SiO2)
mineral
Greenstone
Metabasalt (composed of chlorite, epidote, and actinolite)
metamorphic
Quartz (Small Pebble)
Silicon Dioxide (SiO2)
mineral
Probable serpentinite (serpentine-rich rock)
Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite and olivine remnants
metamorphic
Red Jasper
Silicon Dioxide (SiO2 with Hematite impurities)
mineral
Chert (with potential fossil inclusion)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Agate
Chalcedony (SiO2) with impurities
sedimentary
Green Aventurine
Aventurine Quartz (SiO2 + Muscovite/Fuchsite)
metamorphic
Jasper
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
metamorphic
Greenstone
Metabasalt (Greenstone facies)
metamorphic
Chert (with Iron Staining)
Microcrystalline Quartz (SiO2)
sedimentary
Red Obsidian
Volcanic Glass (Amorphous SiO2)
igneous
Fossilized Horn Coral
Order Rugosa (Rugose Coral)
sedimentary
Quartz (with probable host rock)
Silicon Dioxide (SiO2)
mineral
Greenstone
Greenschist / Meta-basalt
metamorphic
Chert (Jasper)
Microcrystalline Quartz (SiO2)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (specifically Citrine or Iron-stained Quartz)
Silicon Dioxide (SiO2)
mineral
Orpiment
Orpiment (As2S3)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Fuchsite
Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)
mineral
Dinosaur Bone (Gembone)
Petrified Dinosaur Bone (Apatite/Silica replacement)
sedimentary
Chert (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Chalcopyrite in Quartz (Gold-bearing Ore)
CuFeS2 (Chalcopyrite)
mineral
Ruby (Raw Corundum)
Alumina (Al2O3) with Chromium traces
gemstone
Banded Agate (Lake Superior Agate)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
mineral
Quartz (Iron-Stained)
Crystalline Silicon Dioxide (SiO2)
mineral
Blue Apatite
Calcium Phosphate (Ca5(PO4)3(F,Cl,OH))
mineral