Mineral In A Matrix (Likely Quartz Or Feldspar)

Dalmatian Jasper

Peralkalic Quartz-Feldspar Porphyry

Dalmatian Jasper (Dalmatian Stone)

Peralkaline Rock with Feldspar and Arfvedsonite

Mica-rich granite (likely biotite granite)

Biotite granite; mainly quartz (SiO₂), alkali/feldspar, and biotite mica

Likely biotite-bearing metamorphic rock (schist or gneiss)

Mica schist/gneiss; chiefly quartz, feldspar, and biotite mica

Pink Granite Cobble

Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Porphyritic basalt (likely amygdaloidal basalt)

Basaltic rock dominated by plagioclase feldspar and pyroxene, with possible vesicle-filling zeolite/calcite

Pink Granite

Granite (Felsic plutonic rock)

Dalmatian Stone

Dalmatian Stone (Felsic Igneous Rock)

Porphyritic Basalt

Amygdaloidal Porphyritic Basalt

Pink Granite

Granite (Alkali-feldspar granite)

Pyrite cluster in a sulfide-rich ore matrix

Pyrite, FeS₂, likely with pyrrhotite and/or chalcopyrite in matrix

Dalmatian Stone

Dalmatian Stone (a peralkaline igneous rock consisting of Feldspar, Quartz, and Arfvedsonite)

Gneiss (likely Granitic Gneiss)

Gneiss

Granite Pebble

Granite (Felsic Plutonic Rock)

Orbicular granite (likely rapakivi-type granite)

Granite; chiefly quartz, alkali feldspar, plagioclase, and biotite/hornblende

Basalt with Mineral Vein (Cobble)

Basalt (with likely Quartz/Calcite vein)

Milky quartz with iron staining

Quartz, silicon dioxide (SiO₂)

Tumbled copper-bearing rock, likely chrysocolla-bearing basalt or copper ore

Chrysocolla (hydrated copper phyllosilicate, approximately Cu₂H₂Si₂O₅(OH)₄·nH₂O) in a dark volcanic host

Likely weathered granite or granitic gneiss fragment

Granite: quartz + feldspar + mica; possibly gneiss if foliation is present

Granite Fragment

Felsic Plutonic Rock (Granite)

Granite

Phaneritic plutonic rock (SiO2-rich)

Sandstone (Quartz-rich Cobble)

Arenite

Amazonite

Microcline (variety Amazonite), K(AlSi3O8)

Porphyritic rhyolite (likely lithophysal/vesicular rhyolite)

Rhyolite; chiefly quartz and alkali feldspar, with minor plagioclase and iron-bearing minerals

Rhodonite-bearing metamorphic rock

Manganese-rich metamorphic rock, chiefly rhodonite (MnSiO₃), with quartz and manganese oxides

Siltstone with Quartz Vein

Siltstone (primarily SiO2, Al2O3, Fe2O3)

Pink Granite Pebbles

Phaneritic Felsic Intrusive Rock (Granite)

Dalmatian Stone

Peralkaline Quartz-Feldspar Porphyry with Arfvedsonite

Pink Granite

Phaneritic plutonic igneous rock (Alkali feldspar granite)

Gneiss (likely)

Gneiss

Green Apatite on Albite

Fluorapatite [Ca5(PO4)3F] on Albite [Na(AlSi3O8)]

Polished granite pebble

Granite, chiefly quartz, feldspar, and mica/amphibole

Dalmation Stone

Peralkaline Rock (Microcline Quartz mixture with Arfvedsonite)

Amygdaloidal Basalt with Quartz Infill

Basalt (SiO2 for the quartz inclusion)

Biotite-bearing granite or granodiorite

Coarse-grained felsic intrusive rock; chiefly quartz, feldspar, and biotite mica

Chalcedony with inclusions (Agate/Quartz)

Silicon Dioxide (SiO2)

Granite

Granite (Felsic Plutonic Rock)

Amethyst Geode Fragment

Amethyst (Silicon Dioxide, SiO2) with Quartz matrix

Garden Quartz (Shaman Quartz)

Silicon Dioxide (SiO2) with various inclusions (Hematite, Chlorite, Feldspar)

Likely metallic mineral specimen

Probably galena (lead sulfide, PbS), though visual identification is uncertain

Light-colored weathered stone, likely quartz-rich granite or quartzite

Tentative: granite (quartz + feldspar + mica); exact identification is uncertain from the image

Man-made Ceramic / Clay Figurine

Aluminosilicate Ceramic (Processed Clay)