Unakite
Unakite (Epidotized Granite)
metamorphic
Category
Mixed (Predominantly Sedimentary And Igneous)
Browse mixed (predominantly sedimentary and igneous) specimens identified by the Rock Identifier community.
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Unakite
Epidotized Granite
metamorphic
Azurite–malachite-bearing quartz or chalcedony
Cu₃(CO₃)₂(OH)₂ azurite with Cu₂CO₃(OH)₂ malachite in SiO₂-rich matrix
mineral
Sandstone Pebble
Sandstone (Quartzose/Feldspathic Sandstone)
sedimentary
Poppy Jasper
Microcrystalline Quartz (SiO2) with hematite and other inclusions
sedimentary
Magnetite
Magnetite (Fe3O4)
Mineral
Quartz Sandstone Pebble
Sandstone (SiO2 dominated)
sedimentary
Sandstone Pebble
Sandstone (Silicon dioxide-rich clastic sedimentary rock)
sedimentary
Chevron Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary or volcanic host
mineral
Lapis Lazuli
Lapis Lazuli (a rock composed primarily of Lazurite)
Metamorphic rock
Sandstone
Sedimentary Rock (Quartz Arenite)
sedimentary
Sandstone (Water-worn pebble)
Sedimentary Rock (Quartz arenite)
sedimentary
Epidosite with Quartz (Unakite-variant or Jasper)
Epidotized Metasomatite
metamorphic
Sandstone
Sandstone (Arenite)
sedimentary
Garnet (likely Almandine, Pyrope, or a blend)
Garnet group minerals: X3Y2(SiO4)3, where X and Y represent various metal ions (e.g., Almandine: Fe3Al2(SiO4)3, Pyrope: Mg3Al2(SiO4)3)
Mineral
Sodalite
Sodalite, Na8(Al6Si6O24)Cl2
mineral
Amazonite (likely mixed with other feldspars/minerals)
Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.
Mineral
Pegmatite
Igneous Pegmatite (felsic intrusive rock)
igneous
Green Aventurine
Silicon Dioxide with Fuchsite (SiO2 + K(Al,Cr)2AlSi3O10(OH)2)
metamorphic
Crushed Granite / Landscaping Gravel
Granitoid
igneous
Black Tourmaline
Schorl (Na(Fe²⁺)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)
Mineral
Amethyst
Silicon Dioxide with Iron impurities (SiO2)
mineral
Jasper and Quartzite mix
Silicon Dioxide (SiO2) with impurities
sedimentary or metamorphic
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Quartz Sand (Beach Sand)
Silicon Dioxide (SiO2)
sedimentary
Basalt
Basalt
igneous
Milky quartz-bearing rock, likely quartzite or silicified limestone
Quartz (SiO₂), possibly in a quartzite or chalcedony-rich matrix
metamorphic
Carnelian (Carnelian Agate)
Silicon dioxide (SiO2)
mineral
Ocean Jasper
Spherulitic Chalcedony (SiO2)
sedimentary
Amber (specifically Red or Cherry Amber)
Succinite (Resinite); Chemical formula: C10H16O
Mineraloid
Gold
Native Gold (Au)
mineral
Olivine (in Peridotite/Dunite form)
Magnesium Iron Silicate (Mg,Fe)2SiO4
igneous
Green Jasper
Silicon Dioxide (Microcrystalline Quartz, SiO2)
sedimentary
Jasper
Microcrystalline Quartz (SiO2)
sedimentary
Chrysocolla
Hydrated copper silicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Chrysocolla on Matrix
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Unakite
Unakite (Epidotized Granite)
metamorphic
Chalcedony with Druzy Quartz Geode
Silicon Dioxide (SiO2)
mineral
Aquamarine
Beryl (Be3Al2Si6O18)
mineral
Quartz Geode
Silicon Dioxide (SiO2)
sedimentary
Snowflake Obsidian
Volcanic glass containing Spherulites of Cristobalite (SiO2)
igneous