Mineral Side Rock

Fluorite

Calcium Fluoride (CaF2)

Shale

Shale (clastic sedimentary rock composed of silt and clay-sized particles)

Unable to identify - Image contains non-geological items

Sandstone Cobble

Clastic Sedimentary (Sandstone)

Quartz Geode

Silicon Dioxide (SiO2) within a geode

Sandstone

Arenite (SiO2 principal)

Sandstone (with potential mineral staining/concretions)

Arenite (SiO2 based)

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

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

Ferruginous Quartz

Silicon Dioxide (SiO2) with Iron Oxide inclusions

Granite Cobble

Granite

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Mineral and Rock Collection (Assorted)

Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine

Druzy Quartz on Host Rock

Silicon Dioxide (SiO2) with various iron-oxide inclusions

Granitic Pegmatite

Pegmatitic Granite

Granite

Phaneritic plutonic rock (SiO2 rich)

Educational Geologic Collection

Mixed Mineral and Rock Collection (Various compositions)

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Sandstone

Arenite (SiO2 based)

Geode with Quartz and possibly Jasper/Hematite

Quartz (SiO2) and Chalcedony (cryptocrystalline SiO2), possibly stained by iron oxides

Quartz Geode

Silicon Dioxide (SiO2) within a geode

River Stone / Pebble

Clastic Sediment (composed largely of Quartz, Feldspar, and various rock fragments)

Lapis Lazuli

Lapis Lazuli (Primary mineral: Lazurite, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2)

Quartz Vein in Sedimentary Matrix

Silicon Dioxide (SiO2) with host rock

Sandstone (Iron-stained)

Arenite (composed primarily of SiO2 with Fe2O3 staining)

Agate (specifically a Yellow/Honey Agate)

Silicon Dioxide (SiO2) - Microcrystalline Quartz

Quartz Druzy (on Matrix)

Silicon Dioxide (SiO2)

Granite with Epidote

Granite, containing quartz, feldspar, and epidote

Sandstone

Arenite (SiO2 based)

Sandstone (Ferruginous)

Arenite (SiO2 with iron oxide impurities)

Unakite

Epidotized Granite

Fluorite (often referred to casually as 'Fluorspar' in industrial contexts)

Fluorite (CaF2)

Basalt with Quartz/Calcite Veins

Aphanitic Mafic Igneous Rock (Hydrothermal Veined)

Pebble (likely a type of sandstone or quartzite pebble)

Clastic Sediment (specifically, a rudite-sized clast). If the pebble is composed of a specific rock type, its scientific name would be that rock type (e.g., 'Quartzite pebble', 'Granite pebble', 'Chert pebble'). Given its appearance, it is likely a metamorphic quartzite pebble or a hard sandstone pebble.

Sandstone (Banded)

Clastic Sedimentary Rock: Arenite

Shale

Shale (clastic sedimentary rock)

Gneiss

Foliated Metamorphic Rock (Gneiss)

Sandstone (Tumbled/River Pebble)

Arenite (composed primarily of SiO2)

Sandstone (River Rock)

Arenite (composed primarily of SiO2)

N/A (Non-Geological Specimen)

Veined Limestone (Micrite) with Quartz/Calcite Veins

Calcium Carbonate (CaCO3) with Silicate or Carbonate inclusions

Desert Rose

Gypsum (CaSO4·2H2O) or Barite (BaSO4)