Sedimentary And Igneous (Mixed)

Pyrite

Pyrite (FeS2)

Pyrite (or Fool's Gold)

Pyrite (FeS₂)

Botryoidal Chalcedony

Chalcedony (SiO2)

Quartz

Quartz (SiO₂ - Silicon Dioxide)

Hematite (beads)

Hematite (Fe₂O₃)

Marble

Marble (metamorphosed limestone/dolostone). Predominantly composed of Calcite (CaCO3) for marble derived from limestone, or Dolomite (CaMg(CO3)2) for marble derived from dolostone.

River Pebble (Greywacke or Basaltic)

Massive Greywacke or Basaltic Andesite

River Stone (likely Basalt or Chert)

Silicon Dioxide (SiO2) for chert or Mafic Extrusive Rock for basalt

Painted River Pebble (likely Basalt or Greywacke)

Aphanitic Lithic Clast with Anthropogenic Pigment coating

Wishing Stone (Basalt or Siltstone with Quartz/Calcite Vein)

Basalt (SiO2+MgO+FeO) or Siltstone with a Quartz (SiO2) or Calcite (CaCO3) vein

Granite (phaneritic background) with Limestone/Calcite carving

Felsic Igneous Plutonic Rock (background) / Calcium Carbonate (CaCO3) (carving)

Green Aventurine and Clear Quartz

Green Aventurine (Silicon Dioxide - SiO2 with Fuchsite inclusions); Clear Quartz (Silicon Dioxide - SiO2)

Pebble (likely Sandstone or Granitic Pebble)

Clastic Sediment (or specific rock type, e.g., Arenite, Granitoid Pebble)

Quartz

Silicon Dioxide (SiO₂)

River Pebbles (Tumbled Quartz and Basalt)

Silicon Dioxide (SiO2) for white quartz; Mafic Volcanic Rock for basalt

River Rock (Basalt/Greywacke pebbles)

Fluvial gravel primarily composed of Mafic Volcanic Rock (Basalt) or Lithic Sandstone (Greywacke)

Wishing Stone (Basalt/Greywacke with Quartz Vein)

Basalt or Siltstone with SiO2 (Quartz) hydrothermal intrusion

Metal Chain (Likely Steel or a Steel Alloy)

Steel (primarily iron and carbon); specific alloy unknown

Muscovite Mica

Muscovite (Potassium Mica) KAl2(AlSi3O10)(OH)2

Quartz (possibly milky quartz or quartz with inclusions)

SiO2 (Silicon Dioxide)

Chalcedony (or a variety of Chalcedony, likely Agate or Jasper)

Chalcedony (SiO₂)

Ruby in Zoisite

Ruby (α-Al2O3) embedded in Zoisite (Ca2Al3(SiO4)3(OH)) with some Hornblende

Fluorite and Rose Quartz

Fluorite (CaF2), Rose Quartz (SiO2)

Biotite Schist (likely)

Biotite Schist (rock), Biotite (mineral)

Banded Gneiss (River Cobble)

Gneiss (a high-grade metamorphic rock)

Quartz

Silicon Dioxide (SiO2)

Quartz (likely macrocrystalline variety)

Quartz (SiO₂)

Quartz

Quartz (SiO2 - Silicon Dioxide)

Quartz Geode/Cluster

Quartz (SiO2)

Nephrite Jade

Nephrite (a variety of the mineral actinolite within the amphibole group); Chemical Formula: Ca2(Mg,Fe)5Si8O22(OH)2

Quartzite

Quartzite (primarily SiO₂)

Epidote in Quartz

Quartz with Epidote inclusions (SiO2 with Ca2(Al,Fe)3(SiO4)3(OH) inclusions)

Apatite

Apatite group mineral (e.g., Fluorapatite - Ca5(PO4)3F, Chlorapatite - Ca5(PO4)3Cl, Hydroxylapatite - Ca5(PO4)3(OH))

Quartz (likely milky quartz or a stained variety)

Silicon Dioxide (SiO₂)

Quartz

Quartz (SiO₂)

Quartz (likely) or a Quartzite Pebble

Silicon dioxide (SiO2) for quartz. If it's quartzite, it's a metamorphic rock primarily composed of quartz.

Calcite

Calcite (CaCO3)

Hematite

Hematite (Fe2O3)

Quartz Vein in Host Rock (Breccia/Rhyolite)

Silicon Dioxide (SiO2) with matrix

Quartz

Silicon Dioxide (SiO2)

Calcite

Calcite (Calcium Carbonate, CaCO3)

Schist

N/A (a rock type, not a mineral formula)