Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Category
Mineral
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Granite
Phaneritic Igneous Rock (Granite)
igneous
Basalt (with possible Olivine inclusions)
Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Basalt
Basalt (composition predominately plagioclase feldspar and pyroxene)
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Quartz Geode
Silicon Dioxide (SiO2) in a sedimentary host
sedimentary
Biotite Granite
Phaneritic Felsic Igneous Rock
igneous
Schist
Mica Schist
metamorphic
Granite / Gneiss Complex
Felsic Plutonic Rock (Granite) or High-grade Metamorphic Rock (Gneiss)
igneous/metamorphic
Granite
Phaneritic Igneous Rock (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone (River Cobble)
Clastic Sedimentary Rock (primarily Quartz with Feldspar)
sedimentary
Banded Slate (Sedimentary Pebble)
Slate (Metamorphosed Shale or Mudstone)
metamorphic
Sandstone
Arenite (SiO2 with various cementation agents)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Quartzite
Quartzite (primarily SiO2)
metamorphic
Granite
Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)
igneous
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
sedimentary
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Mineral/Sedimentary Interface
Quartzite River Rock
Quartzite (primarily SiO2)
metamorphic
Garnet
Garnet Group (Silicate mineral); general formula X3Y2(SiO4)3
Mineral
Green Aventurine
Aventurine (variety of Quartz - SiO2)
Mineral_Rock
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Granite
Granite (compositional mixture of Quartz, Feldspar, and Mica)
igneous
Garnet-Bearing Gneiss
Garnetiferous Feldspathic Gneiss
metamorphic
Granite
Intrusive Phaneritic Felsic Igneous Rock
igneous
Granite
Granite
igneous
Barite
Barium sulfate (BaSO4)
mineral
Gneiss
Gneiss
metamorphic
Porphyritic Basalt (Flower Stone)
Basalt with Feldspar phenocrysts
igneous
Pink Granite
Phaneritic Felsic Igneous Rock
igneous
Quartzite
Quartzite (SiO2)
metamorphic
Gneiss
Gneiss
metamorphic
Garnetiferous Pegmatite
Pegmatite with Almandine Garnet and Muscovite
igneous
Green Aventurine
SiO2 (Silicon Dioxide with inclusions of Fuchsite mica)
mineral
Granite (Polished Pebble)
Phaneritic Plutonic Rock (primarily Orthoclase and Quartz)
igneous
Granitic Gneiss
Gneiss (containing Potassium Feldspar and Quartz)
metamorphic
Granite
Intrusive igneous felsic rock
igneous
Banded Gneiss with Quartz Vein
Foliated Metamorphic Rock (Gneiss)
metamorphic
Diamond (set in Gold)
Carbon (C)
mineral
Smoky Quartz on Feldspar (Granite Pegmatite)
Silicon Dioxide (SiO2) with Potassium Aluminum Silicate (KAlSi3O8)
igneous
Granite Cobble
Felsic Intrusive Igneous Rock (Granite)
igneous
Diamond (in Jewelry Setting)
Carbon (C) - Isometric-Hexoctahedral
mineral