Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
Category
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Amazonite
Potassium Feldspar (Microcline) - K(AlSi3O8)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Quartz (Iron-stained or Ferruginous Quartz)
Silicon Dioxide (SiO2)
Moonstone (Feldspar variety)
Orthoclase Feldspar (KAlSi3O8)
Amethyst (Faceted Gemstone)
Silicon Dioxide (SiO2) with iron impurities
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide with iron impurities (SiO2)
Amazonite
Microcline (variety Amazonite), K(AlSi3O8)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz Pebble
Crystalline Silicon Dioxide (SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Quartz (Iron-Stained)
Silicon Dioxide (SiO2)
White Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Quartz (worked as a tool or artifact)
Silicon Dioxide (SiO2)
Amethyst
Silicon Dioxide (SiO2) with iron impurities
Smoky Quartz
Silicon Dioxide (SiO2)
Milky Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
Olivine (Peridot)
Magnesium Iron Silicate (Mg,Fe)2SiO4
Milky Quartz Pebble
Silicon Dioxide (SiO2)
Magnetite (potentially Hematite-rich)
Magnetite (Fe3O4)
Sandstone (Feldspathic / Arkose)
Sandstone (SiO2 with variable mineral grains)
Pegmatite
Granite Pegmatite
Galena
Lead Sulfide (PbS)
Porphyritic Andesite
Andesite (Intermediate Extrusive Volcanic Rock)
Vesicular Basalt (Iron-Stained)
Mafic Volcanic Rock (Basalt)
Quartz Geode
Crystalline Quartz (SiO2) within a sedimentary or volcanic host
Milky Quartz Pebble with Matrix
Silicon Dioxide (SiO2)
Ferruginous Quartz Cobble
Silicon Dioxide (SiO2) with Iron Oxide inclusions
Quartz (Beach Pebble)
Silicon Dioxide (SiO2)
Feldspar (Orthoclase)
Potassium Feldspar (KAlSi3O8)
Banded Agate (Tumbled)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Fossilized Shell Fragment
Bivalvia or Gastropoda (Class) fragment
Amazonite
Amazonite (KAlSi3O8)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Obsidian
Volcanic Glass (Amorphous SiO2)
Labradorite
Labradorite (Ca, Na)(Al, Si)4O8
Labradorite
(Ca, Na)(Al, Si)4O8
Magnetite
Magnetite (Fe3O4)
Amethyst
Quartz (Silicon Dioxide with iron impurities), SiO2
Amethyst
Silicon Dioxide (SiO2) with iron impurities