Mineral And Metamorphic Rock

Quartz-veined Mudstone or Argillite

SiO2 (Quartz) in Siltstone/Mudstone matrix

Calcite (likely a tumbled specimen)

Calcite (CaCO 3 )

Quartzite Pebble (River Rock)

Metamorphic Quartzite (predominantly SiO2)

Quartz

Silicon Dioxide (SiO2)

Shale (with minor calcite veining)

Clastic sedimentary rock (primarily clay minerals and quartz)

Smoky Quartz

SiO2 (Silicon Dioxide)

Sandstone with Quarzite clasts

Arenite (SiO2 based)

Sandstone (Weathered Cobble)

Clastic sedimentary rock (primarily SiO2)

Sandstone

Arenite

Banded Sandstone

Arenite (with iron oxide banding)

Sandstone (Ferruginous)

Arenite (Siliclastic Sedimentary Rock)

Sandstone with Concretions / Liesegang Rings

Arenite with iron oxide banding

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Quartzite Pebble

Metamorphosed Quartz Sandstone (SiO2)

Quartzite Pebbles (River Stones)

Quartzite (primarily Silicon Dioxide, SiO2)

Smoky Quartz

SiO2 (Silicon Dioxide)

Prehnite

Prehnite (Ca2Al(AlSi3O10)(OH)2)

Quartzite

Quartzite (SiO2)

Unakite

Unakite (Altered Granite consisting of Orthoclase KAlSi3O8, Epidote Ca2(Al,Fe)3(SiO4)3(OH), and Quartz SiO2)

Pebble (likely Quartzite or Chert)

Clastic Sediment, potentially composed of SiO₂ (Quartz)

Shale

Shale (clastic sedimentary rock)

Diamond

Native Carbon (C)

N/A (Non-Geological Specimen)

Quartz (Milky Quartz)

Quartz (SiO2 - Silicon Dioxide)

Quartzite

Quartzite (SiO2)

Ruby Fuchsite / Ruby in Fuchsite

Ruby (Al2O3 variety corundum) and Fuchsite (K(Al,Cr)2AlSi3O10(OH)2 - a chromium-rich variety of muscovite mica) in Quartz matrix

Slate

Slate (Regional metamorphic rock composed primarily of quartz, illite, and chlorite)

Sandstone (with potentially high Feldspar/Arkose content)

Clastic sedimentary rock (SiO2 dominated)

Geode with Quartz and possibly Jasper/Hematite

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

Prasiolite and Quartz Crystal Cluster

Quartz (SiO2); Prasiolite is a variety of Quartz

Sandstone (with Iron Staining)

Clastic Sedimentary Rock (primarily Quartz, SiO2)

Quartz Vein in Host Rock

Silicon Dioxide (SiO2) in matrix

Biotite (Black Mica)

Biotite - K(Mg,Fe)3AlSi3O10(F,OH)2

Granite (Weathered)

Course-grained Intrusive Igneous Rock

Picture Jasper

Silicon Dioxide (SiO2) with iron oxide and clay inclusions

Peach Moonstone

Potassium Aluminum Silicate (KAlSi3O8)

Jasper

Jasper (Silicon Dioxide, SiO2)

Pink Quartzite

Quartzite (primarily SiO2)

Serpentine (Greenstone)

Antigorite, Lizardite, and Chrysolite mixture (Mg3Si2O5(OH)4)

Quartzite

Quartzite (SiO2)

Quartzite Pebble

Quartzite (SiO2)

Jade

Jade can refer to two distinct minerals: Nephrite (a variety of the mineral actinolite, Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (Na(Al,Fe3+)Si2O6). Based on the image, showing a relatively uniform green color and possibly slight translucence in bead form, it is very likely one of these, but determining which one from a photo is difficult without specific testing.