Sedimentary Or Metamorphic Derived

Browse sedimentary or metamorphic derived specimens identified by the Rock Identifier community.

Amethyst Geode

Amethyst (Silicon Dioxide), Formula: SiO2

mineral

Quartz (Milky Quartz)

Silicon Dioxide (SiO2)

mineral

Quartz (likely Yellow/Orange variety, possibly Citrine or Chalcedony with iron staining)

Quartz (SiO₂)

Mineral

Slate with Red Sandstone Landscaping Rock

Foliated Pelitic Metamorphic Rock (Slate) and Ferruginous Sandstone

metamorphic and sedimentary

Jasper (Iron-stained Chert)

Silicon Dioxide (SiO2)

sedimentary

Quartz

Quartz (SiO2 - Silicon Dioxide)

Mineral

Banded Metamorphic Rock (likely Quartzite or Serpentinite/Soapstone)

Metamorphic Rock (possibly a banded Quartzite or a foliated Serpentinite/Talc Schist based on appearance, general term for such a rock is 'Banded Metamorphic Rock' or 'Gneiss' if pronounced banding of different minerals)

Metamorphic

Veined Quartz

SiO2 (Silicon Dioxide)

Mineral

Blue Sapphire

Corundum (Al2O3 with trace Titanium and Iron)

mineral

Pyrite (Fool's Gold)

Iron Disulfide (FeS2)

mineral

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

mineral

River/Stream Pebble

Clast / Detrital Grain / Rounded Sedimentary Particle (Compositionally variable, commonly Quartz, Feldspar, Chert, or other resistant rock fragments)

Mineral, specifically a rock fragment

Amethyst

Silicon Dioxide (SiO2) with iron impurities

mineral

Banded Agate

Cryptocrystalline Quartz (SiO2)

mineral

Moonstone

Orthoclase (Potassium Feldspar) - (K,Na)AlSi3O8

mineral

Ferruginous Quartz

Silicon Dioxide (SiO2) with Hematite/Limonite inclusions

mineral

Mica in Quartz Host

Muscovite (KAl2(AlSi3O10)(OH)2) in Quartz (SiO2)

igneous

Citrine

Silicon Dioxide (SiO2) with iron impurities

mineral

Gold Ore in Quartz

Native Gold (Au) in Quartz (SiO2)

mineral

Green Quartz (including Prase or Aventurine variants)

Silicon Dioxide (SiO2) with inclusions (likely Actinolite or Chlorite)

mineral

Quartz Crystal

Silicon Dioxide (SiO2)

mineral

Smoky Quartz

Silicon Dioxide (SiO2)

mineral

Smoky Quartz

Smoky Quartz (Silicon Dioxide, SiO2)

mineral

Zebra Jasper

Silicon Dioxide (SiO2) with various inclusions

metamorphic/sedimentary

Jasper with Epidote Vein

Silicon Dioxide (SiO2) with Calcium Aluminum Iron Silicate (Ca2(Al,Fe)3(SiO4)3(OH))

sedimentary

Beaded Jewelry (Assorted Gemstones)

Various minerals, including but not limited to Quartz (SiO2), Garnet (X3Y2(SiO4)3), Jade (Na(Al,Fe)Si2O6), Amethyst (SiO2),等の多様な組み合わせ

Mineral, Jewelry

Greenstone

Metamorphosed Mafic Igneous Rock

metamorphic

Epidote

Epidote Group (Ca2(Al2,Fe3+)(SiO4)(Si2O7)O(OH))

metamorphic

Sandstone (with potentially metamorphic or basaltic bands)

Arenite / Lithic Wacke

sedimentary

Yellow Jade (often Serpentine or Dolomite)

Primarily Serpentine (Mg3Si2O5(OH)4) or Dolomite (CaMg(CO3)2), though the term 'yellow jade' is also sometimes applied to varieties of true nephrite or jadeite.

Mineral, often a rock given its aggregate nature