Tiny amber-colored crystal fragment
Indeterminate; possibly quartz, feldspar, mica, or a sulfide mineral
mineral
Category
Igneous And Metamorphic Derivative (Weathered)
Browse igneous and metamorphic derivative (weathered) specimens identified by the Rock Identifier community.
Learn about Igneous And Metamorphic Derivative (Weathered) in the encyclopedia
View all →
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Moonstone (with Tourmaline/Mica)
Orthoclase/Albite Feldspar (KAlSi3O8 / NaAlSi3O8)
mineral
Agate with Fossil/Inclusion
Silicon Dioxide (SiO2) with chalcedony and potential fossil inclusion
sedimentary
Moonstone with Black Tourmaline
Feldspar (KAlSi3O8) with inclusions of Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Quartz (Water-worn Pebbles)
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Biotite Mica
K(Mg, Fe)3AlSi3O10(F, OH)2
mineral
Agate
Silicon dioxide (Chalcedony), SiO2
sedimentary
Limonite (Iron Ore)
Limonite (FeO(OH)·nH2O)
mineral
Black Tourmaline
Schorl (NaFe3Al6(BO3)3Si6O18(OH)4)
mineral
Yellow Quartz
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Citrine Quartz
Silicon Dioxide (SiO2)
mineral
Sapphire
Corundum (Al2O3)
gemstone
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Inspirational River Stone (Quartzite)
Metamorphosed Quartz-rich Rock (Quartzite) with SiO2 composition
metamorphic
Peach Moonstone
Orthoclase (Potassium Aluminum Silicate, KAlSi3O8)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear Fragment)
Silicon Dioxide (SiO2)
mineral
River Stone (possibly Gneiss)
Metamorphic Gneiss
metamorphic
Milky Quartz on Matrix
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz River Pebble
Silicon Dioxide (SiO2)
mineral
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Quartzite / Sandstone
Quartzite (SiO2-rich metamorphic rock)
metamorphic
Small rounded quartz pebble
Quartz (SiO₂), likely milky or iron-stained quartz
mineral
Gossan (Iron Hat)
Limonitic Gossan (Fe-oxide/hydroxide complex)
igneous
Milky quartz
Quartz (silicon dioxide, SiO₂)
mineral
Clear quartz crystal
Quartz (silicon dioxide, SiO₂)
mineral
Pink Sapphire
Corundum (Al2O3 with trace Chromium and Iron)
mineral
Quartz Sand / Sandstone grains
Silicon Dioxide (SiO2)
sedimentary
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon dioxide (SiO2)
Mineral
Quartz / Quartzite
Silicon Dioxide (SiO2)
mineral / metamorphic
Quartzite River Rock
Metamorphic Rock (Quartzite)
metamorphic
Dark mafic rock, likely basalt
Basalt (fine-grained assemblage chiefly plagioclase and pyroxene, commonly with olivine and iron oxides)
igneous