Metamorphic Or Mineral

Milky Quartz

Silicon Dioxide (SiO2)

Schist

Metamorphic rock (Schist)

Wavellite with Quartz

Al3(PO4)2(OH,F)3 & SiO2

Quartz Mineral

Silicon Dioxide (SiO2)

Blue Apatite

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

Likely serpentine

Serpentine-group minerals, chiefly antigorite, lizardite, or chrysotile; approximate formula Mg₃Si₂O₅(OH)₄

Weathered metamorphic pebble, likely greenstone

Probable greenschist or chlorite-rich metabasalt; exact identification requires testing

White marble (likely calcitic marble)

Calcite-rich marble; primarily calcium carbonate, CaCO₃

Likely banded metamorphic rock, possibly schist or gneiss

Micaceous schist/gneiss; identification is limited from the photograph

Tumbled Mixed Gemstones and Rocks

Various mineral species including quartz (SiO2) and silicate minerals

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

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

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

Fuchsite

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

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)