Sedimentary (Secondary Mineral) Within Igneous

Hemimorphite

Hemimorphite (Zn4Si2O7(OH)2·H2O)

Limonite

FeO(OH)·nH2O

Obsidian

Volcanic Glass

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Quartz-veined Diabase or Basalt Pebble

Diabase or Basalt with Hydrothermal Quartz Veins (SiO2)

Yellow Quartz / Citrine Quartz

Silicon Dioxide (SiO2)

Quartz Pebble

Silicon Dioxide (SiO2)

Fluorite

Calcium Fluoride (CaF2)

Gold Ore

Native Gold (Au) in Quartz or Silicate matrix

Blue Quartz

Silicon Dioxide (SiO2)

Claystone Concretion

Septarian Concretion (Ironstone-rich)

Sunstone Quartz / Aventurine Quartz

Silicon Dioxide (SiO2) with inclusions

Olivine (Peridotite)

Olivine Group; (Mg, Fe)2SiO4

Milky Quartz

Silicon Dioxide (SiO2)

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities

Yellow Quartz Pebble

Silicon Dioxide (SiO2)

Granite with Orthoclase and Hematite Staining

Phaneritic Felsic Igneous Rock (primarily SiO2 with KAlSi3O8)

Granite

Phaneritic plutonic rock (SiO2-rich)

Quartz-Veined Mudstone

Argillaceous Mudstone with Quartz Veining

Pegmatite (Granite Pegmatite)

Intrusive Igneous Rock (Granite Pegmatite)

Quartz Pebble

Silicon Dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Sandstone (Quartzose)

Arenite (primarily SiO2)

Sandstone with Magnetite and Iron Staining

Clastic Sedimentary Rock (contains Fe3O4 and Limonite/Hematite)

Labradorite

Labradorite ((Ca, Na)(Al, Si)4O8)

Biotite Schist

Biotite-rich Schist

Nephrite Jade (Yellow Skin)

Nephrite (Ca2(Mg, Fe)5Si8O22(OH)2)

Red Sandstone

Arenite (Ferruginous Sandstone)

Green Fluorite

Fluorite (Calcium Fluoride, CaF2)

Quartz with Mica and Feldspar

Granitic Pegmatite Fragment (SiO2 + KAlSi3O8 + KAl2(AlSi3O10)(OH)2)

Porphyry (Rhyolite or Andesite Porphyry)

Porphyritic Igneous Rock

Garnet (likely Almandine or a blend)

Garnet group: X3Y2(SiO4)3, where X can be Ca, Mg, Fe2+, Mn2+ and Y can be Al, Fe3+, Cr3+. Given the dark, somewhat reddish-brown appearance in the image, it's likely Almandine (Fe3Al2(SiO4)3) or a mix with other iron-rich garnets.

Sunstone

Oligoclase (Plagioclase Feldspar) with hematite or copper inclusions

Amazonite

Microcline (variety Amazonite), K(AlSi3O8)

Diorite with Quartz Vein

Intermediate plutonic igneous rock (Diorite / Metagabbro with SiO2 quartz alteration)

Quartz (Agate/Jasper pebble)

Silicon dioxide (SiO2)

Agate Nodules

Cryptocrystalline Quartz (SiO2)

Sandstone (with Iron Staining)

Arenite (Silicon Dioxide, SiO2, often with iron oxides like Limonite)

Quartz (Rose Quartz or Jasper variety)

Silicon Dioxide (SiO2)

Weathered Sedimentary Rock with Liesegang Rings

Sandstone or Siltstone with Iron Oxide Banding

Native Copper Nugget

Native Copper (Cu)

Ferruginous Quartz

Ferruginous Quartz (Silicon Dioxide + Iron Oxide, SiO2 + Fe2O3)