Mineral Side Rock

Weathered granite or granitic gneiss

Granite: quartz, feldspar, and mica; possibly gneiss if the dark minerals are banded

Quartz Druzy (Geode Fragment)

Silicon Dioxide (SiO2)

Tumbled yellow jasper (probable)

Jasper, an opaque microcrystalline variety of quartz; chiefly SiO₂ with iron-oxide inclusions

Greenstone pebble (likely altered basalt or serpentine)

Greenschist-facies mafic rock; commonly chlorite–actinolite–epidote ± serpentine

River Rock with Quartz Vein

Basalt or Andesite with Quartz Veining

Red Sandstone

Sedimentary Arenite / Quartzose Sandstone

Milky Quartz with Country Rock contact

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

Veined Quartzite / Vein-filled Sedimentary Rock

Siliciclastic rock with iron oxide-filled fractures

Painted Sandstone

Sandstone (clastic sedimentary rock) with acrylic/artistic coating

Sandstone Cobble

Clastic Sedimentary (Sandstone)

Quartz-rich rock, likely milky quartz vein material

Quartz (SiO₂), possibly with iron-oxide staining and minor associated minerals

Vein Quartz in Basalt or Mafic Rock

Silicon Dioxide (Quartz veins in volcanic host rock)

Tumbled brecciated jasper (likely ocean or mahogany jasper)

Jasper—microcrystalline quartz/chalcedony, SiO₂, with iron-oxide inclusions

Agate Geode

Silicon Dioxide (SiO2) - Chalcedony variety

Pebble

Clast (specifically a granule or small pebble)

Sandstone

Sandstone (clastic sedimentary rock)

Greenstone (likely metamorphosed mafic rock)

Probable chlorite–actinolite–epidote-rich metabasalt; exact identification requires testing

Green serpentine (likely serpentine-rich stone)

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; composition approximately Mg₃Si₂O₅(OH)₄

Schist (likely Mica Schist)

Mica Schist

Sandstone

Arenite (SiO2 based)

Weathered granitic boulder

Granite, typically composed of quartz, feldspar, and mica

Sandstone with Secondary Mineral Encrustation

Arenite with Silica/Calcite deposits (SiO2 or CaCO3)

Sandstone

Sedimentary Rock (Quartz Sandstone)

Sandstone

Quartz Sandstone (predominantly)

Weathered granite

Granite, a quartz–feldspar–mica intrusive igneous rock

Sandstone Pebble / Quartzite Pebble

SiO2 (Silicon Dioxide enriched sedimentary rock)

Milky quartz vein rock

Quartz (SiO₂), likely in a quartz-rich host rock with minor iron-stained minerals

Blue-gray stone pebble (possibly slag or a weathered rock)

Unidentified fine-grained rock; composition cannot be determined from the image

Greenish rough stone, possibly serpentine or soapstone

Indeterminate from the image; possible serpentinite (serpentine-group minerals) or talc-rich soapstone

Basalt with Granite Inclusions (Xenoliths)

Mafic igneous rock (Basalt) with Sialic minerals

Sandstone (Lithic Wacke)

Clastic sedimentary rock (primarily SiO2 with rock fragments)

Sandstone and Conglomerate pebbles

Sedimentary clastic rock

Jasper and Epidote Breccia

Silicified Brecciated Rock with Epidote

Druzy Quartz on Matrix

Silicon Dioxide (SiO2)

Banded Gneiss Pebble

Gneiss (Metamorphic Rock)

Chalcedony Geode

Silicon Dioxide (SiO2)

Pegmatitic gneiss with a quartz–feldspar vein

Quartz–feldspar-rich gneiss, locally cut by a granitic pegmatite vein

Likely greenstone (metamorphosed basalt)

Metabasalt; commonly composed of chlorite, actinolite, epidote, and albite

Weathered pale-blue rock fragment

Unidentified; the image does not show enough detail for a reliable geological identification

Quartz-veined Limestone

Sedimentary limestone with hydrothermal quartz/calcite veins (CaCO3 / SiO2)

Quartz Vein in Basalt or Mafic Rock

Silicon Dioxide (SiO2) vein in volcanic/mafic matrix

Greenstone pebble

Likely chlorite- and/or actinolite-bearing metamorphic rock; exact composition cannot be determined from the image.