Sunstone
Plagioclase Feldspar (Na,Ca)(Al,Si)4O8
mineral
Category
Sedimentary (Secondary Mineral) Within Igneous
Browse sedimentary (secondary mineral) within igneous specimens identified by the Rock Identifier community.
Learn about Sedimentary (Secondary Mineral) Within Igneous in the encyclopedia
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Smoky Quartz (Rough Specimen)
Silicon Dioxide (SiO2)
mineral
Citrine
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Smoky Quartz
Silicon dioxide with aluminum impurities (SiO2)
mineral
Yellow Quartz (Citrine Quartz or Yellow Chalcedony)
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Sandstone Pebble with Mineral Encrustation
Quartz Sandstone with Calcite/Halite Crust
sedimentary
Banded Agate (specifically Botryoidal/Orbicular Agate)
Silicon Dioxide (SiO2)
Mineral (variety of Chalcedony/Quartz)
Quartz / Milky Quartz
Silicon Dioxide (SiO2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Banded Agate (Onyx type)
Silicon Dioxide (SiO2) - Cryptocrystalline Quartz
mineral
Rose Quartz
Silicon Dioxide with traces of Titanium, Iron, or Manganese (SiO2)
mineral
Peach Moonstone
Potassium Aluminum Silicate (KAlSi3O8)
mineral
Olivine (Peridotite)
(Mg,Fe)2SiO4 (Magnesium Iron Silicate)
igneous
Fluorite Geode
Calcium Fluoride (CaF2)
mineral
Granite Pegmatite
Pegmatite (Quartz, Feldspar, Mica)
igneous
Moqui Marble (Concretion)
Iron Oxide Concretion
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Ironstone Concretion
Ferruginous Siltstone/Ironstone (Fe2O3)
sedimentary
Chert (with Quartz Veining)
Microcrystalline Quartz (SiO2)
sedimentary
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Sandstone (Quartz Arenite)
Sandstone (SiO2 with possible mineral cements)
sedimentary
Chrysocolla
Hydrated copper phyllosilicate, (Cu,Al)2H2Si2O5(OH)4·nH2O
mineral
Snowflake Obsidian
Volcanic Glass with Spherulite inclusions (mainly Cristobalite)
igneous
Amazonite
Microcline (KAlSi3O8 with lead impurities)
mineral
Magnetite / Hematite mix (Iron Ore)
Fe3O4 (Magnetite) / Fe2O3 (Hematite)
mineral
Quartz Geode
Crystalline Silicon Dioxide (SiO2)
mineral
Bloodstone
Chalcedony (Variety: Bloodstone / Heliotrope), SiO2
mineral
Agate Geode
Cryptocrystalline Quartz (SiO2)
mineral
Quartz (likely Herkimer Diamond style)
Silicon Dioxide (SiO2)
mineral
Optical Calcite (Iceland Spar)
Calcite (Calcium Carbonate, CaCO3)
mineral
Howlite
Howlite (Calcium Borosilicate Hydroxide: Ca2B5SiO9(OH)5)
mineral
Pyrite Nodules / Weathered Pyrite
Iron Sulfide (FeS2)
mineral
Smoky Quartz
Silicon Dioxide (SiO2)
mineral
Rough Diamond (or Herkimer Diamond Quartz)
Diamond (C) or Quartz (SiO2)
mineral
Silver Nuggets (Natural or Cast)
Native Silver (Ag)
mineral
Proustite
Proustite (Ag3AsS3)
mineral
Cobaltian Calcite
Cobalt-bearing Calcite (Ca,Co)CO3
mineral