Not A Rock Or Mineral

Nephrite Jade

Nephrite

Serpentine

Serpentinite (a rock composed primarily of serpentine minerals like antigorite, chrysotile, and lizardite; general formula (Mg, Fe)3Si2O5(OH)4)

Biological Bone (Patella/Knee)

Patella (part of the Human Skeletal System)

Schist

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

N/A - Non-Geological Item

Digital Multimeter (Synthetic Object)

Digital Multimeter (DMM)

Granite

Granite (a felsic intrusive igneous rock)

Quartz (Druzy) in host rock

SiO₂ (Silicon Dioxide) as Quartz, with unspecified host rock components (likely silicates and iron oxides)

Abbey Bominable (Monster High character)

Anthropomorphic Yeti / Digital Animation

Pumice

Pumice (volcanic rock)

Gneiss

Gneiss (a rock type, not a specific mineral with a formula)

Pebble

Clast (specifically a granule or small pebble)

Bauxite Ore

Hydrated aluminum oxides (e.g., Gibbsite Al(OH)3, Boehmite ̲̲̲̲AlOOH, Diaspore ̲̲̲̲AlOOH)

River Rock / Stream Pebble

Fluvial Clast / Rounded Sedimentary Particle

Granite

Phaneritic plutonic rock (primarily Quartz, Feldspar, and Mica)

Quartz Geode

Silicon Dioxide (SiO2)

Sandstone

Clastic sedimentary rock (primarily SiO2)

Desert Rose (Baryte or Selenite variant)

Barium Sulfate (BaSO4) or Gypsum (CaSO4·2H2O) with Sand inclusions

Note: No specimen visible

Pebble (likely Sandstone or Granitic Pebble)

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

Granite

Granite (a common rock name, not a single mineral species, composed primarily of quartz, feldspar, and mica/amphibole)

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Sandstone (clastic sedimentary rock)

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Sandstone

Arenite (SiO2 dominant)

Sandstone

Arenite (primarily SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) within metamorphic/igneous matrix

Druzy Quartz on Chert/Chalcedony

Silicon Dioxide (SiO2)

Dark-colored Igneous Rock (likely Basalt or Diabase)

Basalt (extrusive igneous) or Diabase (intrusive igneous)

Milky Quartz with Country Rock contact

Silicon Dioxide (SiO2) in contact with Metamorphic/Igneous rock

Smoky Quartz and Chalcedony Geode Fragment

Silicon Dioxide (SiO2)

Breciated Jasper

Silicon Dioxide (SiO2) with iron oxide inclusions

Granodiorite

Granodiorite (Intermediate intrusive igneous rock)

Sandstone

Arenite (primarily SiO2)

Shale or Slate with Quartz Veins

Shale (fine-grained clastic sedimentary rock) or Slate (low-grade metamorphic rock formed from shale) with Quartz (SiO2) veins

Greywacke (likely)

Greywacke (a type of sandstone)

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

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

Shale or Slaty Mudstone

Argillaceous sedimentary rock

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Brecciated Jasper

Silicon Dioxide (SiO2) with Hematite impurities

Red Sandstone

Sandstone (principally Quartz with Iron Oxide coating)