Crushed Stone / Gravel (Multiple Rock Types)
Lithic fragments (undifferentiated)
Igneous, Sedimentary, and Metamorphic mix
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Healer's Gold (Pyrite and Magnetite in Schist)
Magnetite (Fe3O4) and Pyrite (FeS2) in Mica Schist
metamorphic
Lava Stone and Chakra Beads
Basalt (with various mineral/synthetic beads)
igneous
Amethyst (Chevron or Banded Amethyst)
Silicon Dioxide (SiO2) with trace Iron (Fe)
mineral
Orange Calcite (likely polished specimen)
Calcite
Mineral
Mixed Quartz and River Pebbles (Stone Collection)
Mixed assortment containing mainly Silicon Dioxide (SiO2)
igneous, sedimentary, metamorphic, and mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Mixed Tumbled Gemstones and River Rocks
Mixed Decorative Stones (predominantly Silicon Dioxide - SiO2 variants)
Mixed (Igneous, Sedimentary, Metamorphic, and Minerals)
Unakite
Epidotized Granite
metamorphic
Pietersite
Brecciated Crocidolite in Quartz (Chalcedony)
metamorphic
Rhodolite Garnet
Magnesium Aluminum Silicate; formula: (Mg,Fe)3Al2(SiO4)3
mineral
River Cobble (Gneiss/Schist mix)
Foliated Metamorphic Rock (Gneissic/Schistose)
metamorphic
Greenstone (Greenschist facies)
Greenschist (composed primarily of Chlorite, Actinolite, and Epidote)
metamorphic
River Pebbles and Quartz
Mixed Igneous, Sedimentary, and Metamorphic Rocks (Silicon Dioxide SiO2 dominant)
mixed
Blue Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Granite
Granite
Igneous
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2)
mineral
River Rock (Gneiss/Schist mix)
Foliated Metamorphic Rock (Gneiss)
metamorphic
Granodiorite
Granodiorite
Igneous
Orange Quartzite (Tumbled)
Quartzite (SiO2)
metamorphic
Jasper, Agate, Quartz Mix (Polished Beads)
SiO₂ (Silicon Dioxide) for Quartz. Jasper and Agate are cryptocrystalline varieties of Quartz.
Mineral/Semiprecious Gemstone (variety of Quartz)
Granitic Pegmatite
Granite (with coarse-grained Quartz, Feldspar, and Mica components)
igneous
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
Granite
Granite (composed of Quartz, Feldspar, and Mica)
igneous
River Rocks (Polished River Pebbles)
Stream-rounded clastic sediments
Mixed (Sedimentary, Igneous, and Metamorphic)
Milky Quartz in Gneiss
Quartzite / Foliated Gneiss containing SiO2
metamorphic
Ferruginous Quartz
Silicon Dioxide with Iron Oxide (SiO2 + Fe2O3)
mineral
Grey River Stone (Gneiss/Schist mix)
Foliated Metamorphic Rock (variable mineral formula)
metamorphic
Quartzite / Sandstone / Chert Mix
Silicon Dioxide (SiO2)
sedimentary and metamorphic
Magnetite / Iron Ore (likely Hematite-Magnetite mix)
Magnetite (Fe3O4)
mineral
Gravel or Crushed Stone
Fragmented Aggregate Stone
sedimentary or igneous fragment
Beryl (Variety Mix)
Be3Al2(Si6O18)
Mineral
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Granatic Pegmatite
Pegmatitic Granite
igneous
Asphalt Concrete
Bituminous Concrete / Asphaltic Composite
not a natural rock (man-made composite)
Zoisite with Ruby (Anyolite)
Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)
metamorphic
Crushed Stone / Greywacke
Greywacke (Indurated Sandstone)
sedimentary
Specular Hematite with Quartz and Limonite
Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)
Mineral
Diorite
Diorite (plutonic igneous rock)
igneous
Diorite (Polished River Pebble)
Diorite (Intermediate intrusive igneous rock)
igneous
Unakite
Epidotized Granite
metamorphic
Unakite
Unakite (Epidotized Granite)
metamorphic