Dalmatian Stone (Dalmation Jasper)
Aplite with Arfvedsonite inclusions
igneous
Category
Mineral, Variety Of Chalcedony (Microcrystalline Quartz)
Browse mineral, variety of chalcedony (microcrystalline quartz) specimens identified by the Rock Identifier community.
Sandstone
Arenite (primarily composed of SiO2)
sedimentary
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Green Quartzite
Meta-quartzite with Fuchsite inclusions (K(Al,Cr)2(AlSi3O10)(OH)2 + SiO2)
metamorphic
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Red Sandstone
Sandstone (mainly SiO2 with Iron Oxide cement)
sedimentary
Aventurine
Aventurine Quartz (SiO2 with inclusions)
Mineral
Chert (Flint Nodules)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (Grey Chert)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (variously known as Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (often called Flint in this context)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Amethyst (Pale/Light Variety)
Quartz (Silicon Dioxide) with Iron impurities - SiO2
mineral
Chert (Septarian Concretion/Nodule)
Microcrystalline silica (SiO2) with carbonate mineral veining
sedimentary
Lake Superior Agate
Cryptocrystalline Quartz (SiO2)
mineral
Beryl (Emerald Variety)
Beryllium aluminum silicate (Be3Al2Si6O18)
mineral
Vesicular Basalt (River Pebble)
Vesicular Basalt
igneous
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Mineral (variety of Chalcedony/Quartz)
Yellow Chert or Jasper
Silicon Dioxide (SiO2)
sedimentary
Breciated Chert
Brecciated Chert (Microcrystalline Quartz, SiO2)
sedimentary
Chert (specifically Flint or Jasper variant)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Chert (with Iron Staining)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Jasper with Dendritic Inclusions
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Agate Nodule / Weathered Chert
SiO2 (Silicon Dioxide - Microcrystalline Quartz)
Sedimentary / Mineral
Chert (includes Flint & Jasper)
Chert (Siliceous sedimentary rock, chemical formula SiO2)
sedimentary
Tree Agate
Silicon Dioxide with Chlorite inclusions (SiO2)
Mineral (Variety of Chalcedony)
Red Jasper
Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions
sedimentary
Marble
Metamorphosed Limestone (calcite formulation CaCO3)
metamorphic
Amygdaloidal Rhyolite
Amygdaloidal Rhyolite (Felsic volcanic rock)
igneous
Ferruginous Quartz
Quartz (Silicon Dioxide, SiO2) with iron oxide inclusions
mineral
Peridot and Citrine Gemstones (in a ring setting)
Peridot (Olivine: (Mg,Fe)2SiO4), Citrine (Quartz: SiO2)
mineral
Iron-stained Quartzite / Chert
Silicon Dioxide (SiO2) with Hematite/Limonite impurities
metamorphic
Chert (Flint)
Chert (Silicon Dioxide, SiO2)
sedimentary
Pink Pearl
Calcium Carbonate (Aragonite/Calcite) with Conchiolin (CaCO3)
mineral
Chert Nodule (Flint)
Microcrystalline Quartz (SiO2)
sedimentary
Quartz (Drusy/Crystalline variety)
Silicon Dioxide (SiO2)
mineral
Limonite (Yellow Ochre)
FeO(OH)·nH2O (Hydrous iron(III) oxide-hydroxide mixture)
Mineral (Iron Ore)
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Chert Pebble (Jasperoid/Flint)
Silicon Dioxide (SiO2) - cryptocrystalline quartz
Sedimentary
Rose Quartz
Silicon Dioxide (SiO2) with trace amounts of Titanium, Iron, or Manganese
mineral
Green Aventurine (Green Quartzite)
Silicon Dioxide (SiO2) with inclusions of Fuchsite (K(Al,Cr)2(AlSi3O10)(OH)2)
metamorphic
Yellow Chalcedony (Jasper/Chert Pebble)
Silicon Dioxide (SiO2)
sedimentary