Rock Identifier

Category

Sedimentary To Metamorphic

Browse sedimentary to metamorphic specimens identified by the Rock Identifier community.

Learn about Sedimentary To Metamorphic in the encyclopedia

Conglomerate

Quartzite Sandstone

Quartzite Sandstone

Metabasalt

Eulysite

Breccia

Anthracite

Ironstone

Metaquartzite

Slate

Marble

Hornfels

Metarhyolite

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Milky Quartz Vein in Host Rock (Silicon Dioxide (SiO2)) — mineral

Milky Quartz Vein in Host Rock

Silicon Dioxide (SiO2)

Limonite pseudomorph after Pyrite (Goethite/Limonite FeO(OH)·nH2O) — mineral

Limonite pseudomorph after Pyrite

Goethite/Limonite FeO(OH)·nH2O

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

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Yellow Agate (Agate (Varietal form of Chalcedony/Quartz, SiO2)) — mineral

Yellow Agate

Agate (Varietal form of Chalcedony/Quartz, SiO2)

Pyrite in Quartz (Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)) — mineral

Pyrite in Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Green Opal (Hydrated Silica (SiO2·nH2O)) — mineraloid

Green Opal

Hydrated Silica (SiO2·nH2O)

Quartz-rich rock, possibly milky quartz or quartzite fragment (Quartz (SiO₂), potentially quartzite if metamorphic) — mineral

Quartz-rich rock, possibly milky quartz or quartzite fragment

Quartz (SiO₂), potentially quartzite if metamorphic

Pyrite-bearing rock, possibly pyrite-rich schist or quartzite (Pyrite (iron disulfide, FeS₂) in a fine-grained metamorphic or quartz-rich matrix) — mineral

Pyrite-bearing rock, possibly pyrite-rich schist or quartzite

Pyrite (iron disulfide, FeS₂) in a fine-grained metamorphic or quartz-rich matrix

Jasper (Green) (Silicon dioxide (SiO2)) — Mineral/Sedimentary

Jasper (Green)

Silicon dioxide (SiO2)

Mineral/Sedimentary

Quartz (Raw Chunk) (Silicon Dioxide (SiO2)) — mineral

Quartz (Raw Chunk)

Silicon Dioxide (SiO2)

Jasper (Silicon dioxide (SiO2)) — sedimentary

Jasper

Silicon dioxide (SiO2)

Jasper (Red and Yellow) (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Jasper (Red and Yellow)

Silicon Dioxide (SiO2) with iron oxide impurities

Green Fluorite (Fluorite (Calcium Fluoride, CaF2)) — mineral

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Turquoise (Dyed Howlite/Magnesite imitation) (CuAl6(PO4)4(OH)8·4H2O (Target mineral) / MgCO3 (Magnesite substrate)) — mineral

Turquoise (Dyed Howlite/Magnesite imitation)

CuAl6(PO4)4(OH)8·4H2O (Target mineral) / MgCO3 (Magnesite substrate)

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Common Quartz) (Silicon Dioxide (SiO2)) — mineral

Quartz (Milky/Common Quartz)

Silicon Dioxide (SiO2)

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

Yellow Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

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

Red Jasper

Silicon Dioxide (SiO2) with Hematite inclusions

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Quartz Vein in Hematitic Siltstone (Hydrothermal Quartz (SiO2) in Ferriferous Matrix) — metamorphic

Quartz Vein in Hematitic Siltstone

Hydrothermal Quartz (SiO2) in Ferriferous Matrix

Clear Quartz (Silicon Dioxide (SiO2)) — mineral

Clear Quartz

Silicon Dioxide (SiO2)

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (SiO2 (Silicon Dioxide)) — mineral

Quartz

SiO2 (Silicon Dioxide)

Green Aventurine (Aventurine Quartz (SiO2 with inclusions of Fuchsite)) — mineral

Green Aventurine

Aventurine Quartz (SiO2 with inclusions of Fuchsite)

Ferruginous Quartz (Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions) — mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide (Fe2O3) inclusions

Red Jasper (Jasper (Silicon Dioxide Si₂O₃)) — sedimentary

Red Jasper

Jasper (Silicon Dioxide Si₂O₃)

Yellow Jasper (Jasper (Silica-rich Microcrystalline Quartz, SiO2)) — sedimentary

Yellow Jasper

Jasper (Silica-rich Microcrystalline Quartz, SiO2)

Pale green translucent mineral fragment, likely calcite (Calcite (CaCO₃), tentatively; possibly green fluorite or prehnite) — mineral

Pale green translucent mineral fragment, likely calcite

Calcite (CaCO₃), tentatively; possibly green fluorite or prehnite

Mixed collection of natural stones (Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks) — igneous, metamorphic, sedimentary

Mixed collection of natural stones

Several unidentified lithologies, likely including basalt, granite, quartzite, sandstone, and weathered metamorphic rocks

igneous, metamorphic, sedimentary

Pyrite (Iron Sulfide (FeS2)) — mineral

Pyrite

Iron Sulfide (FeS2)

Clear Quartz (Rock Crystal) (Silicon Dioxide (SiO2)) — mineral

Clear Quartz (Rock Crystal)

Silicon Dioxide (SiO2)

Red Jasper (Silicon Dioxide (SiO2) with iron oxide impurities) — sedimentary

Red Jasper

Silicon Dioxide (SiO2) with iron oxide impurities

Gold-colored mineral specimen, likely pyrite or weathered mica schist (Tentatively pyrite (FeS₂); identification is uncertain from the obscured image) — mineral

Gold-colored mineral specimen, likely pyrite or weathered mica schist

Tentatively pyrite (FeS₂); identification is uncertain from the obscured image

Beach Pebbles and Quartz Aggregates (Quartz pebbles and biogenic fragments (SiO2, CaCO3)) — sedimentary

Beach Pebbles and Quartz Aggregates

Quartz pebbles and biogenic fragments (SiO2, CaCO3)

Mixed rock and mineral specimen collection (Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks) — mineral

Mixed rock and mineral specimen collection

Multiple species, likely quartz (SiO₂), calcite (CaCO₃), feldspar, chert, and assorted volcanic/sedimentary rocks

Milky Quartz (Silicon Dioxide (SiO2)) — mineral

Milky Quartz

Silicon Dioxide (SiO2)

Tumbled quartz-rich carbonate rock (Likely massive quartz (SiO₂), possibly calcite-bearing marble or limestone) — mineral

Tumbled quartz-rich carbonate rock

Likely massive quartz (SiO₂), possibly calcite-bearing marble or limestone

Quartz (Silicon Dioxide (SiO2)) — mineral

Quartz

Silicon Dioxide (SiO2)

Likely quartz fragment (Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock) — mineral

Likely quartz fragment

Quartz (silicon dioxide, SiO₂), possibly milky quartz or quartz-rich rock

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

Red Jasper

Jasper (Silicon Dioxide with Iron Oxide inclusions, SiO2)