Igneous Or Sedimentary (Anthropogenic Modification)

Shale

Laminated Mudstone

Granite

Granite (a felsic intrusive igneous rock)

Granite

Granite (a felsic intrusive igneous rock)

Fish Fossil in Limestone

Lycoptera (likely) in Micritic Limestone

Red Jasper (possibly Agatized Jasper)

Jasper (Silicon Dioxide, SiO2 with Fe2O3 inclusions)

Quartz Druze on Matrix

Silicon Dioxide (SiO2)

Banded Gneiss (with possible weathered sulfide or iron staining)

Gneiss, potentially with iron oxide/hydroxide staining (e.g., limonite) or weathered sulfides

Banded Gneiss

Gneiss

Obsidian

Extrusive igneous volcanic glass (rich in SiO2)

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt

Basalt (Fine-grained extrusive igneous rock)

Red Scoria (Lava Rock)

Scoria (Extrusive Igneous Rock / Mafic composition)

Basalt

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Pink Granite

Granite (Phaneritic felsic intrusive igneous rock)

Basalt River Pebble

Basalt (fine-grained mafic igneous rock)

Granite

Phaneritic Acidic Igneous Rock (Granite Group)

Basalt

Basalt (Vitreous to Aphanitic Mafic Igneous Rock)

Granite (Background) and Quartzite/River Pebble (Foreground Heart)

Phaneritic Felsic Igneous Rock (Granite background)

Basalt with Calcite Veining

Aphanitic Mafic Igneous Rock (Basalt) with CaCO3

Vesicular Basalt

Vesicular Basalt (Aphanitic Mafic Igneous Rock)

K2 Azurite Granite / K2 Stone

Granite (igneous rock) with Azurite inclusions (mineral)

Granodiorite

Granodiorite (calc-alkaline phaneritic igneous rock)

Granite

Phaneritic Plutonic Igneous Rock (Rich in SiO2)

Scoria (Lava Rock)

Scoria (highly vesicular extrusive igneous rock)

Basalt (Stream-worn Cobble)

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Basalt-Amugydule (Amygdaloidal Basalt)

Aphanitic Mafic Igneous Rock with Vesicle Infillings

Basalt River Pebble

Mafic Igneous Rock (Fine-grained Basalt)

Basalt with Iron Oxidation

Mafic Igneous Rock (primarily Plagioclase and Pyroxene)

Scoria (Lava Rock)

Scoria (Extrusive Igneous Rock / Mafic Silicates)

Basalt with Iron Oxidation

Vesicular Basalt (Aphanitic Mafic Igneous Rock)

Basalt

Basalt (Phaneritic/Aphanitic Mafic Igneous Rock)

Vesicular Basalt

Extrusive Mafic Igneous Rock (Vesicular Basalt)

Pegmatite

Coarse-grained Igneous Rock (Granitic Pegmatite)

Vesicular Basalt (or Scoria)

Basalt (Aphanitic-Vesicular Mafic Igneous Rock)

Quartz Vein in Sedimentary Rock

Silicon Dioxide (SiO2) with host Chert or Limestone

Biotite Mica

K(Mg,Fe2+)3(Al,Fe3+)Si3O10(OH,F)2

Aquamarine

Beryl (Be3Al2Si6O18), specifically the blue-green variety

Crinoid Marble (Fossilized Limestone)

Crinoidal Limestone (comprising Calcite/Aragonite CaCO3)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Basalt

Basalt (Mafic Extrusive Igneous Rock)

Granite

Granite (Felsic intrusive igneous rock)

Diorite

Diorite (intermediate intrusive igneous rock)