Rock Identifier

Category

Mineral (Specifically A Variety Of Chalcedony, Which Is Microcrystalline Quartz)

Browse mineral (specifically a variety of chalcedony, which is microcrystalline quartz) specimens identified by the Rock Identifier community.

Red Jasper (Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2) — mineral

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide impurities), SiO2

mineral
Yellow Quartz (Citrinated Quartz) (Silicon Dioxide (SiO2)) — mineral

Yellow Quartz (Citrinated Quartz)

Silicon Dioxide (SiO2)

mineral
Red Jasper (Polished) (Jasper (Iron-rich Microcrystalline Quartz, SiO2)) — sedimentary

Red Jasper (Polished)

Jasper (Iron-rich Microcrystalline Quartz, SiO2)

sedimentary
Bloodstone (Heliotrope) (Chalcedony (SiO2) with inclusions of Iron Oxide or Red Jasper) — mineral

Bloodstone (Heliotrope)

Chalcedony (SiO2) with inclusions of Iron Oxide or Red Jasper

mineral
Yellow Jasper (Chalcedony (SiO2 with iron impurities)) — sedimentary

Yellow Jasper

Chalcedony (SiO2 with iron impurities)

sedimentary
Onyx (Chalcedony (SiO2) with parallel banding) — mineral

Onyx

Chalcedony (SiO2) with parallel banding

mineral
Jasper (Chert (Silica: SiO2)) — sedimentary

Jasper

Chert (Silica: SiO2)

sedimentary
Leopard Skin Jasper (Silicon Dioxide (SiO2) with various inclusions) — sedimentary

Leopard Skin Jasper

Silicon Dioxide (SiO2) with various inclusions

sedimentary
Tiger's Eye (and Hematite/Jasper Matrix) (SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite) — mineral

Tiger's Eye (and Hematite/Jasper Matrix)

SiO2 (Pseudomorph of Quartz after Crocidolite) with Hematite/Magnetite

mineral
Jasper (Red/Green Brecciated) (Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions) — sedimentary

Jasper (Red/Green Brecciated)

Silicon Dioxide (SiO2) with iron oxide and chlorite inclusions

sedimentary
Jasper (Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)) — sedimentary

Jasper

Jasper (Silica-rich microcrystalline Quartz, SiO2 with Fe2O3 impurities)

sedimentary
Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

sedimentary
Jasper with Quartz Veining (Silicon Dioxide (SiO2) with impurities such as Fe2O3) — sedimentary

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with impurities such as Fe2O3

sedimentary
Yellow Agate (Silicon Dioxide (SiO2)) — mineral

Yellow Agate

Silicon Dioxide (SiO2)

mineral
Milky Quartz Pebble (Quartz (Silicon Dioxide - SiO2)) — mineral

Milky Quartz Pebble

Quartz (Silicon Dioxide - SiO2)

mineral
Jasper (likely Polychrome or Mookaite variants) (Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions) — sedimentary (chemically precipitated)

Jasper (likely Polychrome or Mookaite variants)

Silicon Dioxide (SiO2) with iron oxide and hydroxide inclusions

sedimentary (chemically precipitated)
BROWN GRANITE (likely 'Tan Brown' or similar) (Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)) — igneous

BROWN GRANITE (likely 'Tan Brown' or similar)

Granite (specifically a variety rich in orthoclase feldspar, often with biotite and possibly hornblende)

igneous
Banded Agate (specifically Black Sardonyx/Onyx variety) (Silicon Dioxide (SiO2) - Cryptocrystalline Quartz) — mineral

Banded Agate (specifically Black Sardonyx/Onyx variety)

Silicon Dioxide (SiO2) - Cryptocrystalline Quartz

mineral
Chert (specifically Flint or Common Opal/Chalcedony mix) (Microcrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Flint or Common Opal/Chalcedony mix)

Microcrystalline Quartz (SiO2)

sedimentary
Crazy Lace Agate (Silicon dioxide (SiO2) - a variety of banded Chalcedony (cryptocrystalline quartz)) — mineral

Crazy Lace Agate

Silicon dioxide (SiO2) - a variety of banded Chalcedony (cryptocrystalline quartz)

mineral
Zebra Jasper (Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities) — sedimentary

Zebra Jasper

Silicon Dioxide (SiO2) - Macro-crystalline Quartz/Chert with impurities

sedimentary
Yellow Jasper (within host rock) (Silicon Dioxide (SiO2) with iron hydroxides (Goethite)) — sedimentary

Yellow Jasper (within host rock)

Silicon Dioxide (SiO2) with iron hydroxides (Goethite)

sedimentary
Seraphinite (Clinochlore (a variety of the chlorite group)) — mineral

Seraphinite

Clinochlore (a variety of the chlorite group)

mineral
Chert (Grey/Black variety) (Chert (Silicon Dioxide, SiO2)) — sedimentary

Chert (Grey/Black variety)

Chert (Silicon Dioxide, SiO2)

sedimentary
Jasper with Quartz Veining (Silicon Dioxide (SiO2) with iron oxide inclusions) — sedimentary

Jasper with Quartz Veining

Silicon Dioxide (SiO2) with iron oxide inclusions

sedimentary
Jasper and Agate (Microcrystalline Quartz (SiO2)) — sedimentary

Jasper and Agate

Microcrystalline Quartz (SiO2)

sedimentary
Yellow Topaz (Imperial or Precious Topaz) (Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)) — mineral

Yellow Topaz (Imperial or Precious Topaz)

Al2SiO4(F,OH)2 (Aluminum Silicate Fluoride Hydroxide)

mineral
Jasper (Iron-rich) (Silicon Dioxide (SiO2) with Fe2O3 (Hematite) inclusions) — sedimentary

Jasper (Iron-rich)

Silicon Dioxide (SiO2) with Fe2O3 (Hematite) inclusions

sedimentary
Jasper (Banded Jasper) (Silicon Dioxide (SiO2) with impurities) — sedimentary

Jasper (Banded Jasper)

Silicon Dioxide (SiO2) with impurities

sedimentary
Chert (specifically Pink/Tan Chert) (Microcrystalline or Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Pink/Tan Chert)

Microcrystalline or Cryptocrystalline Quartz (SiO2)

sedimentary
Botryoidal Chalcedony (likely Desert Rose/Agatized Geode Crust) (Silicon Dioxide (SiO2)) — mineral

Botryoidal Chalcedony (likely Desert Rose/Agatized Geode Crust)

Silicon Dioxide (SiO2)

mineral
Chert (Jasper variety) (Silicon Dioxide (SiO2)) — sedimentary

Chert (Jasper variety)

Silicon Dioxide (SiO2)

sedimentary
Jasper (Jasper (Silicon Dioxide, SiO2)) — sedimentary

Jasper

Jasper (Silicon Dioxide, SiO2)

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

Yellow Chalcedony (Agate)

Silicon Dioxide (SiO2)

mineral
Gneiss (Gneiss) — metamorphic

Gneiss

Gneiss

metamorphic
Banded Agate (specifically Moss or River Agate variety) (Cryptocrystalline Quartz (SiO2)) — mineral

Banded Agate (specifically Moss or River Agate variety)

Cryptocrystalline Quartz (SiO2)

mineral
Quartz (Milky/Opaque variety) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Opaque variety)

Silicon Dioxide (SiO2)

mineral
Red Jasper (Quartz (Silicon Dioxide) with Iron Oxide impurities (Fe2O3)) — mineralological specimen

Red Jasper

Quartz (Silicon Dioxide) with Iron Oxide impurities (Fe2O3)

mineralological specimen
Rose Quartz (Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese) — mineral

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

mineral
Chert (specifically Black Chert or Flint) (Cryptocrystalline Quartz (SiO2)) — sedimentary

Chert (specifically Black Chert or Flint)

Cryptocrystalline Quartz (SiO2)

sedimentary
Red Jasper (Silicon Dioxide (SiO2) with Iron impurities) — mineral

Red Jasper

Silicon Dioxide (SiO2) with Iron impurities

mineral
Red Jasper (Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)) — Mineral (variety of Chalcedony/Quartz)

Red Jasper

Silicon Dioxide with Iron Oxide inclusions (SiO2 + Fe2O3)

Mineral (variety of Chalcedony/Quartz)