Mineral, Specifically A Detrital Grain

Quartzite Pebble (with Iron Staining)

Quartzite (SiO2)

Granite

Phaneritic Felsic Igneous Rock

Diabase (Dolerite) Cobble

Diabase / Dolerite

Burmese Jadeite (Water Jade)

Jadeite (NaAlSi2O6)

Granite

Phaneritic Granitoid (Primary minerals: Quartz SiO2, Feldspar KAlSi3O8, and Biotite/Mica)

Granite

Phaneritic Plutonic Felsic Rock (K-Feldspar + Quartz + Plagioclase)

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Conglomerate (Red Sandstone variety)

Clastic Sedimentary Rock (Conglomeratic Sandstone)

Pink Quartzite

Quartzite (primarily SiO2)

Quartzite (or Milky Quartz pebble)

Quartzite (primarily Silicon Dioxide, SiO2)

Quartzite (River Pebble)

Quartzite (composed primarily of Silica, SiO2)

Granite

Granite (a common term for a felsic intrusive igneous rock)

Desert Rose (Gypsum Variety)

Gypsum (Calcium Sulfate Dihydrate) - CaSO4·2H2O

Liesegang Ring Siltstone

Siltstone with iron oxide Liesegang bands

Quartzite

Quartzite (primarily SiO2)

Granite

Phaneritic Plutonic Igneous Rock (composed of Quartz, Feldspar, and Mica)

Banded Gneiss

Gneiss (High-grade Regional Metamorphic Rock)

Pink Granite

Phaneritic Felsic Intrusive Igneous Rock

Quartz Mica Schist

Mica-Quartz Schist (Chemical: SiO2 + KAl2(AlSi3O10)(OH)2)

Chert (varieties include Flint and Jasper)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Limestone (Ocherous)

Calcium Carbonate (CaCO3) with Iron Oxide (Limonite)

Jasper (Cream/Yellow variety)

Silicon Dioxide (SiO2) with impurities

Greenstone

Greenschist (commonly containing Chlorite, Actinolite, and Epidote)

Septarian Nodule

Septarian concretion (Complex mixture of Siderite/Limestone, Calcite, and Aragonite)

Conglomerate

Clastic sedimentary rock (Conglomerate)

Gneiss

Gneiss (High-grade regional metamorphic rock)

Conglomerate

Clastic sedimentary rock (Puddingstone)

Red Shale

Fissile Siliciclastic Sedimentary Rock

Fossiliferous Sandstone (with Brachiopod or Bivalve mold)

Clastic Sedimentary Rock with Macrofossil Mold

Jasper

Silicon dioxide (SiO2)

Quartzite with Iron Hydroxide Staining

Quartzite (primarily SiO2) with Limonite/Goethite staining

Granite

Phaneritic plutonic rock (composed mainly of SiO2, Al2O3, K2O, and Na2O)

Lava Rock (Basalt)

Basalt (extrusive igneous rock)

Quartzite

Quartzite (composed primarily of SiO2)

Granodiorite

Phaneritic Plutonic Rock - Granodiorite

Granite

Granite (Felsic Plutonic Rock)

Beach Quartz Pebble

Quartz (Silica - SiO2)

Granite

Granite (a common type of Felsic Intrusive Igneous Rock)

Quartzite Pebble

Quartzite (primarily SiO2)

Granite

Phaneritic Intrusive Igneous Rock (primarily composed of SiO2, Al2O3, K2O, Na2O)

Granodiorite Pebble

Granodiorite

Basalt

Extrusive mafic igneous rock