Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Category
Browse sedimentary (processed mineral product) specimens identified by the Rock Identifier community.
Dyed Agate
Silicon Dioxide (SiO2) with synthetic dyes
Limestone (Brecciated/Recrystallized)
Calcium Carbonate (CaCO3)
Azurite
Azurite (Cu3(CO3)2(OH)2)
Rutilated Quartz
Silicon Dioxide (SiO2) with Titanium Dioxide (TiO2) inclusions
Tiger's Eye
Tiger's Eye (SiO2 with crocidolite inclusions)
Jasper
Silicon Dioxide (SiO2)
Quartz Pebble (Iron-stained)
Silicon Dioxide (SiO2)
Rose Quartz
Silicon dioxide (SiO2) with trace amounts of titanium, iron, or manganese
Chert (specifically Jasper or Flint type)
Microcrystalline Quartz (SiO2)
Jasper (Yellow/Brown variety)
Silicon Dioxide (SiO2) with iron oxide impurities
Red Jasper
Silicon Dioxide (SiO2) with Hematite (Fe2O3) impurities
Red Jasper (with Quartz veining)
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
Jasper (Green variety)
SiO2 (Silicon Dioxide with iron/chlorite inclusions)
Ammonite Fossil
Ammonoidea (typically preserved as Calcite CaCO3 or Pyrite FeS2)
Red Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
Jasper
Jasper (Silicon Dioxide, SiO2)
Amygdaloidal Basalt
Basalt with secondary amygdule minerals (likely Epidote or Chlorite)
Rose Quartz
Silicon Dioxide (SiO2)
Chert (specifically Red Chert/Jasper variety)
Silicon Dioxide (SiO2)
Gold Nugget
Native Gold (Au)
Marble
Recrystallized Calcite (CaCO3)
Sodalite
Sodalite (Na8(Al6Si6O24)Cl2)
Black Tourmaline
Schorl (Na(Fe2+)_{3}Al_{6} (BO_{3})_{3} (Si_{6}O_{18})(OH)_{4})
Amygdaloidal Basalt
Amygdaloidal Basalt (Ca-rich Plagioclase, Pyroxene, and Olivine)
Petrified Wood
Silicified Wood / Chalcedony (SiO2)
Milky Quartz with Iron Staining
Quartz (Silicon Dioxide, SiO2)
Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Chert (Commonly known as Flint)
Microcrystalline Quartz (SiO2)
Red Jasper
Silicon Dioxide with Iron Oxide (SiO2)
Chert (Jasper/Quartzite river pebble)
Microcrystalline Silica (SiO2)
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) with iron oxide inclusions
River Pebble (Greywacke or Basaltic)
Massive Greywacke or Basaltic Andesite
River Stone (likely Basalt or Chert)
Silicon Dioxide (SiO2) for chert or Mafic Extrusive Rock for basalt
Blue Lepidolite
Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)
Aquamarine
Beryl (Be3Al2Si6O18 with iron impurities)
Green Aventurine
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
Prehnite
Calcium aluminum silicate hydroxide - Ca2Al(AlSi3O10)(OH)2
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
Mica schist
Mica schist (Muscovite and Biotite group)
Specular Hematite (Specularite) in Matrix
Specularite (Fe2O3)
Rhodonite
Rhodonite (Mn,Fe,Mg,Ca)SiO3
Amazonite
Potassium Aluminum Silicate (KAlSi3O8)