Igneous And Sedimentary Mixture

Greenstone Porphyry

Porphyritic Metavolcanic Rock

Granodiorite Pebble

Granodiorite

Granite

Intrusive Felsic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Basalt with Quartz/Calcite Vein

Basalt (Mafic Volcanic Rock with secondary mineralization)

Granite

Granite (Felsic Plutonic Rock)

Pink Granite

Granite (Alkali-feldspar granite)

Basalt

Extrusive mafic igneous rock

Basalt

Basalt (Mafic volcanic rock)

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Granite

Granite (Phaneritic Quartz-Feldspar intrusive rock)

Pink Granite

Phaneritic Felsic Igneous Rock (composed of orthoclase, quartz, and plagioclase)

Pumice

Pumicite (Amorphous Volcanic Glass)

Diorite (River Pebble)

Intermediate plutonic igneous rock

River Rock (Basalt)

Basalt (SiO2 range: 45-52%)

Basalt with Scoria/Vesicular Texture

Vesicular Basalt (Iron-rich/Oxidized)

Pink Granite

Phaneritic Plutonic Rock (Granite with K-Feldspar)

Snowflake Obsidian

Volcanic Glass with Spherulitic Cristobalite (SiO2)

Porphyritic Basalt (likely Chinese Writing Stone)

Porphyritic Basalt / Plagioclase Feldspar in Basal Matrix

Granite

Granite (Felsic Plutonic Rock)

Granite Cobble (River Stone)

Felsic intrusive igneous rock (composition: Quartz, Feldspar, Mica)

Snowflake Obsidian

Vitreous Volcanic Rock (Amorphous Silicate), SiO2

Yooperlite (Syenite clasts with Sodalite)

Fluorescent Sodalite-bearing Syenite

Granite

Granite (Felsic Plutonic Rock)

Arfvedsonite in Quartz (also known as Eudialyte/Garnet Syenite variety)

Arfvedsonite [Na3(Fe2+)4Fe3+Si8O22(OH)2] within a silicate matrix

Obsidian

Obsidian (principally SiO2 silicon dioxide)

Basalt

Extrusive mafic igneous rock

Obsidian (Apache Tear)

Obsidian / Amorphous Volcanic Glass (main component: SiO2)

Iron Meteorite (likely Chondrite or Iron-Nickel fragment)

Siderite (Iron Meteorite), primarily Fe-Ni (Iron-Nickel) alloy

Obsidian

Obsidian (Volcanic Glass)

Granite

Granite (composed primarily of Quartz, Alkali Feldspar, and Plagioclase)

Granite

Phaneritic Felsic Igneous Rock

Snowflake Obsidian

Obsidian with Cristobalite inclusions (Amorphous SiO2 + SiO2 inclusions)

Feldspar-rich Granite (Pink Granite)

Phaneritic Felsic Igneous Rock

Granite

Phaneritic Felsic Igneous Rock (Granite)

Quartz with Mica (Pegmatite)

Quartz (SiO2) and Muscovite (KAl2(AlSi3O10)(OH)2)

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Scoria (Lava Rock)

Mafic Vesicular Volcanic Rock

Granite

Course-grained intrusive igneous rock

Granite

Phaneritic Felsic Igneous Rock

Pink Granite

Granite (Phaneritic igneous rock rich in Alkali Feldspar and Quartz)

Lava Rock with Fabric Impression

Scoria or Basalt with anthropogenic impressions

Porphyry (Flower Stone)

Porphyritic Basalt or Andesite