Metamorphic (Altered Igneous Rock)

Lapis Lazuli (Low-grade)

Lapis Lazuli (Aggregate of Lazurite, Calcite, and Pyrite)

Conical fossil shell or shell fragment

Likely a gastropod shell fragment; exact taxon indeterminate from the image

Small rounded pebble, likely quartz-rich river stone

Indeterminate; likely quartz/chert-bearing lithic clast

Milky quartz vein rock

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

Chakra Stone Bracelet

Mixed Mineral Assembly (Scoria, Amethyst, Lapis Lazuli, Turquoise/Howlite, Impression Jasper, Tiger's Eye, Carnelian, Red Jasper)

Uncertain pale granitoid or weathered feldspathic rock

Likely granite or granodiorite; chiefly quartz, feldspar, and minor mica, but the photograph is insufficient for precise identification.

Greenstone (likely chlorite-rich metamorphic rock)

Chlorite-bearing greenschist; exact identification requires testing

Likely weathered brown quartz-bearing rock

Tentatively weathered granite or granitic gneiss; exact identification is uncertain from the photograph

Uncertain small stone; possibly weathered quartz-bearing rock

Indeterminate from image; candidate materials include quartz-rich pebble or altered silicate rock

Unakite (likely epidote–feldspar rock)

Epidote–K-feldspar–quartz aggregate; commonly approximated as pink orthoclase/microcline + green epidote + quartz

Weathered greenish-gray rock fragment

Tentatively basaltic or mafic metamorphic rock; exact identification is uncertain from the photograph

Green-and-gold apatite-bearing rock, possibly epidote skarn

Apatite-group mineral, commonly fluorapatite (Ca₅(PO₄)₃F), with probable epidote and quartz; exact identification requires testing

Mixed river stones; foreground likely sandstone

Quartz-rich sandstone, with associated rounded quartzite/chert and other cobbles

Greenstone (likely chlorite- or epidote-rich metamorphic rock)

Greenstone; commonly metamorphosed basalt or dolerite, with chlorite, epidote, and actinolite

Weathered porphyritic volcanic rock, likely andesite

Porphyritic andesite (tentative; plagioclase ± pyroxene/amphibole in a fine groundmass)

Weathered quartz-bearing rock, possibly porphyritic rhyolite

Likely altered rhyolite or dacite containing quartz and feldspar; exact identification requires testing

Epidosite

Epidosite (composed primarily of Epidote and Quartz)

Weathered quartz-rich rock, possibly granite or quartzite

Indeterminate; likely quartz–feldspar aggregate, potentially altered granite

Likely basalt (possibly weathered volcanic rock)

Basalt; predominantly plagioclase feldspar and pyroxene, with possible olivine and iron oxides

Unakite

Unakite (altered granite)

Unakite

Unakite (Altered Granite)

Lapis Lazuli

Lapis Lazuli (Metamorphic rock primarily composed of Lazurite, Calcite, and Pyrite)

Quartz and Unakite

SiO2 (Quartz) / Epidote, Pink Orthoclase, Quartz (Unakite)

Milky Quartz Pebble

Quartz (Silicon Dioxide, SiO2)

Weathered mafic rock, likely basalt

Basalt (fine-grained aggregate dominated by plagioclase and pyroxene; identification is visual and uncertain)

Epidote

Epidote Group (e.g., Clinozoisite, Epidote, Piemontite), Epidote formula: Ca2(Al,Fe)3(SiO4)3(OH)

Polished pegmatitic granite (likely graphic granite)

Coarse-grained granitic rock composed chiefly of quartz, feldspar, and biotite/hornblende

Weathered mica-rich rock fragment

Likely mica schist or phyllite; identification is uncertain from the image alone

Greenstone / altered basalt pebble

Metamorphosed or hydrothermally altered mafic rock; likely chlorite–actinolite basalt (greenstone)

Quartz on Greenstone

Silicon Dioxide (SiO2) on Altered Igneous Geologic Unit

Unakite (Tumbled)

Unakite (altered granite)

Rounded greenish stone, likely basalt or metamorphic greenstone

Probable fine-grained mafic rock; possible basalt (plagioclase–pyroxene) or greenschist-facies greenstone

Dark gray volcanic rock, probably andesite or basalt

Fine-grained mafic–intermediate volcanic rock; likely basalt (plagioclase ± pyroxene), possibly andesite

Blue-gray feldspar-rich rock, likely labradorite-bearing gneiss or anorthosite

Plagioclase feldspar (albite–anorthite series), possibly with labradorite; exact rock identification is uncertain from one photo

Greenstone pebble

Greenschist-facies mafic rock, commonly derived from basalt; likely rich in chlorite, actinolite, and epidote

Milky quartz-rich rock

Quartz (silicon dioxide, SiO₂), likely with mica or feldspar inclusions

Greenstone (Altered Mafic Rock)

Greenschist / Meta-basalt

Epidote (Unakite variety)

Epidosite (Metasomatic rock containing Ca2(Al,Fe)3(SiO4)3(OH))

Porphyritic volcanic rock (likely andesite or basaltic andesite)

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

Unakite

Unakite (altered granite)

Epidote or Unakite Rock

Epidote-bearing rock / Ca2(Al,Fe)3(SiO4)3(OH)

Tumbled reddish-brown basalt or andesite cobble

Fine-grained mafic to intermediate volcanic rock; commonly plagioclase, pyroxene, and magnetite, with iron-oxide staining