Sandstone (Quartzose Sandstone)
Clastic Sedimentary Rock (primarily SiO2 with Fe2O3 staining)
sedimentary
Category
Man Made Composite
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Granite and Igneous Mix
Phaneritic Felsic to Mafic Intrusive Rocks
igneous
Basalt
Basalt (Mafic volcanic rock)
igneous
Sandstone (Ferruginous)
Arenite (primarily SiO2 with iron oxide cement)
sedimentary
Granite
Phaneritic plutonic rock (Quartz, Alkali Feldspar, and Plagioclase)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite (SiO2 based)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Granite
Phaneritic Felsic Intrusive Igneous Rock
igneous
Sandstone
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Sandstone
Arenite (Sedimentary rock comprising sand-sized grains)
sedimentary
Sandstone (Quartzose)
Arenite (Siliciclastic sedimentary rock)
sedimentary
Sandstone (Quartz-rich)
Arenite
sedimentary
Talc
Talc (Mg₃Si₄O₁₀(OH)₂)
Mineral
Quartz
Quartz (SiO₂)
Mineral
Porphyritic Basalt or Diabase with Plagioclase Phenocrysts
Porphyritic Basalt or Diabase; Mineral: Plagioclase Feldspar
Igneous
Granite
Granite (a plutonic igneous rock composed primarily of quartz and feldspar)
Igneous Rock
Stainless Steel Spoon
Iron-Chromium Alloy (Fe + Cr + Ni)
mineral-based human-made alloy
Red Sandstone
Arenite (Ferruginous Sandstone)
sedimentary
Rose Quartz Carving
Quartum roseum (Variety of Quartz, SiO2)
Mineral
Rose Quartz (likely carved)
Rose Quartz (SiO2)
Mineral
Quartz
Quartz (SiO₂)
Mineral
Sandstone (Ferruginous)
Clastic Sedimentary Rock (Sandstone)
sedimentary
Granite
Phaneritic Felsic Igneous Rock
igneous
Sandstone (Ferruginous)
Clastic sedimentary rock (primarily SiO2 with Fe2O3 cement)
sedimentary
Basalt
Basalt
igneous
Sandstone (likely Arkosic or Lithic Sandstone)
Clastic Sedimentary Rock (SiO2 with assorted minerals)
sedimentary
Sandstone
Arenite (primarily Quartz Arenite)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Basalt
Basalt (principally Plagioclase and Pyroxene)
igneous
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (Ferruginous)
Arenite (Fe2O3 enriched)
sedimentary
Granite
Felsic Intrusive Igneous Rock
igneous
Basalt
Basalt (Aphanitic Mafic Igneous Rock)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary