Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Category
Mineral (Specifically A Variety Of Quartz)
Browse mineral (specifically a variety of quartz) specimens identified by the Rock Identifier community.
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Diabase (Greenstone)
Diabase (Dolerite)
igneous
Jasper and Quartz River Cobble
Silicon Dioxide (SiO2) with Hematite inclusions
Sedimentary / Metamorphic
Epidote with Quartz and Feldspar
Ca2(Al2,Fe3+)(SiO4)3(OH) (Epidote complex)
metamorphic
River Jasper (Chert/Chalcedony mix)
Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions
sedimentary
Jasper (with Manganese or Iron inclusions)
Silicon Dioxide (SiO2)
sedimentary
Chert (Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Quartz (Milky/Clear variety)
Silicon Dioxide (SiO2)
mineral
Chert (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Larimar
Pectolite (NaCa2Si3O8(OH))
mineral
Ocean Jasper (Orbicular Jasper)
Silicon Dioxide (SiO2) with iron and other impurities
sedimentary
White Marble
Calcite-rich Metasomatized Carbonate (CaCO3)
metamorphic
Green Calcite
Calcite (CaCO3)
mineral
Banded Calcite (often marketed as Mexican Onyx or Onyx Marble)
Calcite (Calcium Carbonate, CaCO3)
sedimentary
Moss Agate
Chalcedony (Silicon Dioxide, SiO2) with dendritic inclusions
mineral
Diamond
Carbon (C), specifically in an isometric crystal system.
Mineral
Blue Dyed Agate
Silicon Dioxide (SiO2)
mineral
Black Spinel
Magnesium Aluminum Oxide (MgAl2O4)
mineral
Amber
Succinite (specifically for Baltic Amber), Formula: C10H16O
Organic Gemstone (often associated with Sedimentary sequences)
Rough Corundum (likely Sapphire/Zircon-bearing)
Aluminium Oxide (Al2O3)
mineral
Chert (or Flint)
Mocrocrystalline Quartz (SiO2)
sedimentary
Vesicular Basalt (River Pebble)
Vesicular Basalt
igneous
Basalt (Greenstone)
Amygdaloidal Basalt / Chloritized Basalt
Igneous
Amazonite
Amazonite / Microcline (KAlSi3O8)
igneous
Chert (Nodule)
Silicon Dioxide (SiO2)
sedimentary
Quartz Geode (partially formed/chalcedony with iron staining)
Quartz (SiO2) with Chalcedony (cryptocrystalline quartz) and likely Iron Oxides/Hydroxides
Mineral/Sedimentary Rock Feature
Yellow Calcite
Calcium Carbonate (CaCO3)
mineral
Quartz (on matrix)
Quartz (Silicon Dioxide, SiO₂)
Mineral
Chalcedony (variations like Agate or Jasper)
Chalcedony (SiO₂ - microcrystalline quartz)
Mineral
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate), KAlSi3O8
mineral
Yellow Jasper
Silicon Dioxide (SiO2) - Opaque Chalcedony
sedimentary
Limonitic Sandstone (Stained Sandstone)
Clastic Sedimentary Rock with Iron Oxide (Limonite/Goethite) staining
sedimentary
Jasper Geode
Silicon Dioxide (SiO2) with impurities
sedimentary
Fuchsite in Quartz
K(Al,Cr)2(AlSi3O10)(OH)2 in SiO2
metamorphic
Tree Agate (Dendritic Agate/Quartz)
Silicon Dioxide (SiO2) with trace Manganese or Iron oxide inclusions
mineral
Chert (Chert / Flint)
Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Mineraloid
Common Green Opal
Hydrated amorphous silicon dioxide (SiO2·nH2O)
mineral
Fuchsite Gneiss (Green Quartzite)
Chromium-rich Muscovite (KAl2(AlSi3O10)(OH)2 with Cr replacements)
metamorphic
Pallasite Meteorite
Pallasite (Stony-iron meteorite; Fe-Ni alloy with (Mg,Fe)2SiO4 olivine)
Mineral/Extraterrestrial Rock