Rock Identifier

Category

Mineral (Or Mineraloid If Microcrystalline)

Browse mineral (or mineraloid if microcrystalline) specimens identified by the Rock Identifier community.

Learn about Mineral (Or Mineraloid If Microcrystalline) in the encyclopedia

Shungite

Flower Jasper

Feather Jasper

Dendritic Jasper

Blue Jasper

Sperrylite

Brookite

Leopard Skin Jasper

Leopard Skin Jasper

Banalsite

Black Shale

Garnierite

Wulfenite

Quartz Pebble (possibly Chalcedony or Chert) (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble (possibly Chalcedony or Chert)

Silicon Dioxide (SiO2)

Red jasper (Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides) — mineral

Red jasper

Jasper, an opaque microcrystalline variety of quartz (SiO₂), colored mainly by iron oxides

Opalite (Synthetic Opalized Glass) — mineraloid (man-made)

Opalite

Synthetic Opalized Glass

mineraloid (man-made)

Agate (Silicon dioxide (SiO2) - variety Chalcedony) — mineral

Agate

Silicon dioxide (SiO2) - variety Chalcedony

Banded Agate (Silicon Dioxide (SiO2)) — mineral

Banded Agate

Silicon Dioxide (SiO2)

Rhyolitic jasper / brecciated jasper (Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities) — igneous

Rhyolitic jasper / brecciated jasper

Silica-rich volcanic rock, chiefly microcrystalline quartz (SiO₂), with iron-oxide and clay/mineral impurities

Chalcedony (Tumbled) (Cryptocrystalline Quartz (SiO2)) — mineral

Chalcedony (Tumbled)

Cryptocrystalline Quartz (SiO2)

Flint / Chert with Cortex (Microcrystalline Quartz (SiO2)) — sedimentary

Flint / Chert with Cortex

Microcrystalline Quartz (SiO2)

Quartzite Pebble (with mineral veining) (Metamorphic Quartzite (SiO2)) — metamorphic

Quartzite Pebble (with mineral veining)

Metamorphic Quartzite (SiO2)

Red Jasper Pebble (Silicon Dioxide (SiO2) with Iron Oxide inclusions) — sedimentary

Red Jasper Pebble

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Quartz (or Chert/Flint) (Silicon Dioxide (SiO2)) — mineral

Quartz (or Chert/Flint)

Silicon Dioxide (SiO2)

Shark Tooth Fossil (Vertebrate fossilized tooth) — fossil

Shark Tooth Fossil

Vertebrate fossilized tooth

Leopard Skin Jasper (Microcrystalline Quartz (SiO2) with mineral impurities) — sedimentary

Leopard Skin Jasper

Microcrystalline Quartz (SiO2) with mineral impurities

Chalcedony on Matrix (Silicon Dioxide (SiO2)) — mineral

Chalcedony on Matrix

Silicon Dioxide (SiO2)

Quartz Pebble (Silicon Dioxide (SiO2)) — mineral

Quartz Pebble

Silicon Dioxide (SiO2)

Jasper (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper

Microcrystalline Quartz (SiO2)

Chert (with Quartz vein/coating) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (with Quartz vein/coating)

Microcrystalline Quartz (SiO2)

Tumbled orbicular jasper (probable) (Jasper, microcrystalline quartz (SiO₂), with iron- and clay-rich inclusions) — mineral

Tumbled orbicular jasper (probable)

Jasper, microcrystalline quartz (SiO₂), with iron- and clay-rich inclusions

Polished orbicular jasper (likely ocean jasper) (Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions) — mineral

Polished orbicular jasper (likely ocean jasper)

Jasper, a microcrystalline variety of quartz (SiO₂), with iron-oxide and other mineral inclusions

Banded Agate (Silicon Dioxide (SiO2) - Chalcedony Variety) — mineral

Banded Agate

Silicon Dioxide (SiO2) - Chalcedony Variety

Agate Nodules (Cryptocrystalline Quartz (SiO2)) — mineral

Agate Nodules

Cryptocrystalline Quartz (SiO2)

Carnelian Agate (Silicon Dioxide (SiO2)) — mineral

Carnelian Agate

Silicon Dioxide (SiO2)

Agate (Chalcedony) (Silicon Dioxide (SiO2)) — mineral

Agate (Chalcedony)

Silicon Dioxide (SiO2)

Boxwork Siderite or Sepatarian Nodule Weathering (Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment) — sedimentary

Boxwork Siderite or Sepatarian Nodule Weathering

Siderite (FeCO3) with secondary mineralization or Boxwork Geode fragment

Chert (potentially Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (potentially Jasper)

Microcrystalline Quartz (SiO2)

Quartz (Chert/Chalcedony flake) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony flake)

Silicon Dioxide (SiO2)

Agate (Polished Cabochon Slice) (Silicon Dioxide (SiO2)) — mineral

Agate (Polished Cabochon Slice)

Silicon Dioxide (SiO2)

Blue Quartz (Quartz (Silicon Dioxide) with blue inclusions (SiO2)) — mineral

Blue Quartz

Quartz (Silicon Dioxide) with blue inclusions (SiO2)

Yellow Quartz (Chalcedony or Agate) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Chalcedony or Agate)

Silicon Dioxide (SiO2)

$Jasper pebble with vein quartz cross-cutting fractures (Microcrystalline Quartz (SiO2) with iron oxide inclusions) — sedimentary$

Jasper pebble with vein quartz cross-cutting fractures

Microcrystalline Quartz (SiO2) with iron oxide inclusions

Chert (Jasper) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (Jasper)

Microcrystalline Quartz (SiO2)

Jadeite (Jadeite, NaAlSi2O6) — gemstone

Jadeite

Jadeite, NaAlSi2O6

Quartz (Chert/Chalcedony variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Chert/Chalcedony variety)

Silicon Dioxide (SiO2)

Limonite (Ironstone Concretion) (Limonite (Hydrous Ferric Oxides mixed with Goethite)) — sedimentary

Limonite (Ironstone Concretion)

Limonite (Hydrous Ferric Oxides mixed with Goethite)

Red jasper (likely polished/chipped fragment) (Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides) — mineral

Red jasper (likely polished/chipped fragment)

Jasper, microcrystalline quartz (SiO₂) colored mainly by iron oxides

Polished red jasper (Jasper, opaque microcrystalline quartz (SiO₂) colored mainly by iron oxides) — mineral

Polished red jasper

Jasper, opaque microcrystalline quartz (SiO₂) colored mainly by iron oxides

Jadeite (NaAlSi2O6) — gemstone

Jadeite

NaAlSi2O6

Milky Quartz Geode / Chalcedony Nodule (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz Geode / Chalcedony Nodule

Quartz (Silicon Dioxide - SiO2)

Bumblebee Jasper (Carbonate-rich volcanic rock containing Sulfur and Arsenic (Realgar/Orpiment)) — sedimentary

Bumblebee Jasper

Carbonate-rich volcanic rock containing Sulfur and Arsenic (Realgar/Orpiment)

Jasper or Agate (Silicon dioxide (SiO2)) — Mineral

Jasper or Agate

Silicon dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with Hematite inclusions) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Yellow Chalcedony (Quartz Pebble) (Silicon Dioxide (SiO2)) — mineral

Yellow Chalcedony (Quartz Pebble)

Silicon Dioxide (SiO2)