Sedimentary Rock (Altered)

Greenish-gray rock fragment, likely serpentine-rich stone

Possibly serpentinite (serpentine-group minerals; identification is uncertain from the image)

Greenstone (likely altered basalt)

Chlorite- and/or epidote-altered mafic volcanic rock; exact identification needs close examination

Dumortierite in Quartz

Silicon Dioxide with Aluminium Borosilicate (SiO2 + (Al,Fe7+)7(BO3)(SiO4)3O3)

Dolomite or Limestone (Carbonate Rock)

CaMg(CO3)2 (Dolomite) or CaCO3 (Limestone / Calcite)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered granitic rock (epidosite/unakite)

Tumbled brecciated jasper (likely ocean jasper or red-and-gray jasper)

Microcrystalline quartz/chalcedony (SiO₂) with iron-oxide hematite/goethite and dark volcanic-mineral inclusions

Reddish weathered volcanic rock, probably andesite

Andesite (fine-grained plagioclase–pyroxene volcanic rock), possibly altered basalt

Likely rhyolite or altered volcanic rock

Fine-grained felsic volcanic rock, probably rhyolite; exact identification is uncertain from the image

Weathered graywacke or sandstone with a dark mineral-rich vein

Likely lithic graywacke/sandstone; dark material may be quartz, iron-manganese oxide, or sulfide mineralization

Granite or granitic rock fragment

Coarse-grained felsic intrusive rock, chiefly quartz, feldspar, and mica/amphibole

Unidentified pale yellow-green mineral/rock fragment

Possibly sulfur-bearing mineral, serpentine, or weathered limestone; exact identification requires testing

Polished brecciated jasper

Jasper (microcrystalline quartz, SiO₂), likely brecciated and iron-oxide stained

Unakite

Altered Granite (Epidotized Granite)

Iron-stained metamorphic rock, likely quartzite or jasper

Quartz-rich rock dominated by SiO₂, with iron oxides/hydroxides (hematite, goethite) and possible clay or mica

Polished Kambaba jasper (orbicular jasper)

Orbicular microcrystalline quartz, commonly sold as Kambaba jasper; typically quartz/chalcedony with dark green to black amphibole or other inclusions

Likely weathered basalt or andesite fragment

Fine-grained volcanic rock, likely basaltic-andesite; exact identification requires testing

Tumbled yellow quartz-rich stone, likely yellow jasper or quartzite

Jasper/quartzite; mainly microcrystalline quartz (SiO₂), with iron-oxide staining

Howlite (polished/tumbled)

Howlite, Ca₂B₅SiO₉(OH)₅

Likely olivine (peridot)

Olivine-group silicate, approximately (Mg,Fe)₂SiO₄

Tumbled greenish pebble, possibly serpentine

Indeterminate green metamorphic rock; serpentine-group minerals are a plausible match

Polished greenstone pebble

Likely serpentinite or chlorite-rich greenschist

Tumbled jasper, likely red/brown jasper

Microcrystalline quartz (chalcedony), SiO₂, colored by iron oxides

Iron-rich sandstone or weathered laterite

Ferruginous sandstone; chiefly quartz (SiO₂) cemented by iron oxides/hydroxides

Greenstone / serpentinite-like metamorphic rock

Probable serpentinite-rich greenschist; commonly dominated by serpentine-group minerals, chlorite, actinolite, and magnetite

Rounded weathered cobble, likely basaltic/volcanic rock

Fine-grained mafic volcanic rock, probably basalt (exact identification requires testing)

Serpentinite

Serpentinite (Hydrated magnesium iron phyllosilicate)

Weathered limestone or calcitic fossil/reef fragment

Calcite-rich limestone (CaCO₃), possibly fossiliferous limestone

Porphyritic volcanic rock (likely andesite or basaltic andesite)

Porphyritic andesite/basaltic andesite; mainly plagioclase, pyroxene, and possibly olivine in a fine volcanic groundmass

Greenstone (likely metamorphosed mafic rock)

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

Fossilized bivalve shell or shell-rich limestone

Likely an indeterminate fossil mollusk; calcite/aragonite (CaCO₃), possibly preserved in limestone

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite (or Polished Jasper Pebble)

Altered Granite (Epidote-Orthoclase Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Unakite

Altered Granite (Granitic Metamorphic Rock)

Tumbled gray-green pebble, likely chert or altered volcanic rock

Cryptocrystalline quartz (chert), possibly silicified volcanic material

Unakite

Altered Granite (Unakite)

Unakite

Unakite (altered granite containing Epidote, Orthoclase, and Quartz)