Metamorphic And Mineral

Blue Apatite

Apatite, Ca5(PO4)3(F,Cl,OH)

Banded gneiss pebble

Biotite–quartz–feldspar gneiss (composition variable)

Tumbled or weathered gneiss

Feldspar–quartz–mica gneiss (composition variable)

Yellow Aventurine (Yellow Quartzite)

Silicon Dioxide (SiO2) with inclusions

Fuchsite

Chromium-rich Muscovite (KAl2(AlSi3O10)(OH,F)2 with Cr replacements)

Reddish-brown crystalline rock, possibly weathered granite or garnet-bearing schist

Indeterminate; likely quartz–feldspar–mica rock with iron oxides, potentially garnet-bearing

Quartz pebble

Silicon dioxide (SiO2)

Prehnite

Ca2Al(AlSi3O10)(OH)2

Quartz-rich rock, possibly milky quartz or quartzite

Quartz (SiO₂); if quartzite, recrystallized quartz sandstone

Dark gray metamorphic rock fragment

Likely slate or fine-grained schist; mineral composition cannot be confirmed from the image

Greenstone

Metamorphic Greenstone (Greenschist facies)

Greenschist

Greenschist (containing Chlorite, Epidote, and Actinolite)

Raw garnet-rich metamorphic rock

Likely garnet-bearing schist or garnetite; garnet-group silicates, commonly almandine (Fe₃Al₂Si₃O₁₂)

Banded gneiss pebble

Gneiss, typically quartz–feldspar–mica assemblage

Chalcopyrite in Quartz matrix

Chalcopyrite (CuFeS2) with secondary Malachite (Cu2CO3(OH)2)

Pyrite

Iron Disulfide (FeS2)

Foliated gneiss, possibly migmatitic gneiss

Gneiss; primarily quartz, feldspar, and mica (biotite/muscovite), with possible amphibole

Gneiss

Metamorphic rock (Gneiss)

Talc Schist / Soapstone

Talc (Mg3Si4O10(OH)2)

Unidentified small mineral fragments

Likely quartz- or feldspar-rich material; species cannot be determined reliably from the image

Jade

There are two distinct minerals commonly known as Jade: Nephrite (a calcium magnesium silicate - Ca2(Mg,Fe)5Si8O22(OH)2) and Jadeite (a sodium aluminum silicate - NaAlSi2O6). Based on the image showing a typically softer, more fibrous appearance, it is likely Nephrite.

Gneiss

Gneiss

Mica-rich Schist fragment

Mica Schist

Polished ruby-in-fuchsite (tentative)

Fuchsite mica with corundum (ruby), commonly in quartzite or mica schist

Fuchsite

Chromium-rich Muscovite (K(Al,Cr)2(AlSi3O10)(OH)2)

Rhodonite

Manganese Silicate (Mn,Fe,Mg,Ca)SiO3

Gold Mineral

Native Gold (Au)

Galena

Lead Sulfide (PbS)

Orthoclase Feldspar

KAlSi3O8 (Potassium Aluminum Silicate)

Jasper

SiO2

Quartz pebble

SiO2, Quartz

Moonstone

Orthoclase (KAlSi3O8)

Marble

Recrystallized Calcite (CaCO3)

Greenish metamorphic rock (possibly chlorite schist)

Chlorite-rich schist; exact identification is uncertain from the image

Hypersthene

Hypersthene ((Mg,Fe)SiO₃)

Muscovite Mica

Muscovite (KAl2(AlSi3O10)(F,OH)2)

Pyrite

Iron Sulfide (FeS2)

Kyanite

Kyanite (Al2SiO5)

Gneiss

Gneiss (Metamorphic high-grade)

Quartz-rich rock fragment, possibly milky quartz

Quartz (SiO₂), likely a small vein-quartz or quartz-bearing rock fragment

Magnetite-rich iron ore

Magnetite (Fe₃O₄), possibly massive magnetite/ironstone

Foliated Gneiss

Gneiss (Metamorphic Rock)