Mineral In A Matrix (Likely Quartz Or Feldspar)

Pink-and-white quartz-rich rock, likely rose quartz-bearing granite or pegmatite

Quartz (SiO₂) with pink feldspar, likely granitic pegmatite

Granite

Granite, a coarse-grained felsic intrusive igneous rock composed mainly of quartz, feldspar, and mica

Weathered granite (likely granitic pegmatite)

Coarse-grained granite; chiefly quartz (SiO₂), feldspar, and mica

Quartz–feldspar pegmatite with pink tourmaline

Granitic pegmatite; predominantly quartz (SiO₂), microcline/orthoclase (KAlSi₃O₈), albite (NaAlSi₃O₈), and likely elbaite tourmaline (Na(Li,Al)₃Al₆(BO₃)₃Si₆O₁₈(OH)₄)

Orbicular Jasper (Ocean Jasper or Poppy Jasper variant)

Silicon Dioxide (SiO2) with various inclusions

Andesite Porphyry

Porphyritic Andesite (Intermediate volcanic rock)

Black tourmaline in matrix (probable schorl)

Schorl tourmaline, NaFe²⁺₃Al₆(BO₃)₃Si₆O₁₈(OH)₄, with a yellow-brown iron-oxide-rich vein or alteration mineral

Banded gneiss

Gneiss, likely biotite–quartz–feldspar gneiss

Likely altered granite or feldspathic gneiss

Quartz–feldspar–mica rock; exact identification requires testing

Pegmatite with muscovite mica

Granitic pegmatite; quartz (SiO₂), feldspar, and muscovite (KAl₂(AlSi₃O₁₀)(OH)₂), locally biotite/tourmaline

Likely blue-gray gneiss

Gneiss, a foliated metamorphic rock; exact mineral composition cannot be confirmed from the image

Dalmatian Stone

Dalmatian Jasper (not a true jasper, typically an igneous perthite)

Porphyritic Granite (Glacial Erratic)

Porphyritic Biotite Granite

Druzy quartz on matrix

Quartz (SiO₂), likely microcrystalline-to-fine crystalline drusy quartz

Polished mica-rich metamorphic sphere

Likely mica schist or garnet-mica schist; exact identification is uncertain from the photograph

Porphyritic Andesite or Diorite

Andesite/Diorite Porphyry

Granite Pebble

Granite (Plutonic Igneous Rock)

Emerald in Matrix

Beryl (Be3Al2Si6O18)

Conglomerate

Polymictic conglomerate; rounded clasts cemented in a fine-grained matrix

Rose quartz-bearing pegmatite

Quartz (SiO₂) with pink feldspar, likely potassium feldspar; exact identification is limited by the image

Granite

Granite (Plutonic Igneous Rock)

Mica-rich schist (likely quartz-mica schist)

Quartz–mica schist, commonly containing muscovite and/or biotite with quartz and feldspar

Flesh-colored Quartz Mineral

SiO2 (Silicon Dioxide) with Iron Impurities

Porphyritic Basalt or Diabase with Plagioclase Phenocrysts

Porphyritic Basalt or Diabase; Mineral: Plagioclase Feldspar

Llanite (Rhyolite with Blue Quartz)

Porphyritic Rhyolite

Dalmatian Jasper (Dalmatian Stone)

Perthitic Feldspar with Arfvedsonite/Riebeckite

Biotite-bearing granite or granitic gneiss

Quartz–feldspar–biotite aggregate; likely granite, possibly weathered gneiss

Quartz crystal fragment in weathered host rock

Quartz (SiO₂), possibly in a feldspathic or iron-stained matrix

Red granite

Biotite–hornblende granite, commonly granitic plutonic rock

Granite Pebble with Quartz Vein

Granite (Plutonic Igneous Rock) with Quartz (SiO2)

Sandstone

Sandstone (SiO2-rich framework with variable matrix)

Likely mica-rich schist with embedded dark pebble

Biotite–quartz schist; dark clast possibly basalt or chert

Weathered granitic pegmatite (uncertain)

Felsic granitoid/pegmatitic rock, chiefly quartz and feldspar with dark biotite or amphibole

Porphyritic Basalt with K-Feldspar Phenocryst

Porphyritic Basic Igneous Rock (with Potassium Feldspar)

Red garnet-bearing metamorphic rock

Almandine garnet (Fe₃Al₂Si₃O₁₂), likely in mica schist or quartz-rich matrix

Quartz-rich granitic rock, possibly pegmatite

Granite/pegmatitic granite; chiefly quartz (SiO₂), feldspar, and mica

Weathered layered metamorphic rock, likely schist or phyllite

Micaceous quartz–feldspar schist/phyllite; exact identification requires a fresh surface and testing

Basalt with Plagioclase or Quartz Inclusion

Melanocratic Basalt with Porphyritic Inclusion

Gneiss (likely banded granitic gneiss)

Quartz–feldspar–mica gneiss; commonly containing biotite and/or amphibole

Glauconitic Sandstone with possible Trace Fossil

Glauconitic Sandstone (K(Fe,Al)2(Si,Al)4O10(OH)2)

Likely feldspar (weathered potassium feldspar)

K-feldspar, commonly orthoclase or microcline; KAlSi₃O₈

Dalmatian Stone

Peralkaline rhyolite