Sedimentary Or Metamorphic (Low Grade)

Dark gray metamorphic pebble, likely slate or phyllite

Slate/phyllite; chiefly fine-grained quartz, mica, and clay-derived minerals

Greenschist

Greenschist (Chlorite-actinolite schist)

Epidote

Epidote {Ca2}{Al2Fe3+}(Si2O7)(SiO4)O(OH)

Corundum (Ruby/Sapphire crystal)

Al2O3 (Aluminum Oxide)

Jadeite (Jade Ring)

NaAlSi2O6 (Sodium Aluminum Silicate)

Ironstone Concretion (Boxwork)

Siderite-Limonite Concretion (FeO(OH)·nH2O)

Siltstone

Siltstone (fine-grained clastic sedimentary rock)

Limonite Concretion

Goethite-rich Concretion (FeO(OH))

Pink-and-white quartz-rich pebble

Quartz (SiO₂), likely massive quartz with iron-oxide staining and possible feldspar inclusions

Greenschist

Chlorite schist

Red-and-black slate

Slate, a fine-grained metamorphic rock composed mainly of clay-derived mica minerals and quartz

Jadeite

Jadeite (NaAlSi2O6)

Epidote

Epidote (Ca2(Al, Fe)3(SiO4)3(OH))

Weathered greenstone (probable)

Greenstone; likely altered mafic rock composed chiefly of chlorite, epidote, and albite

Limonite

Hydrated iron(III) oxide-hydroxide, FeO(OH)·nH2O

Polished mica-rich metamorphic sphere

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

Serpentine

Serpentine-group (Mg, Fe, Ni, Al, Zn, Mn)2-3(Si, Al, Fe)2O5(OH)4

Aquamarine (Pendant) and Jasper (Beads)

Beryllium aluminum silicate (Be3Al2Si6O18) with Chalcedony (SiO2)

Jadeite

NaAlSi2O6

Jade (Nephrite)

Ca2(Mg,Fe)5Si8O22(OH)2

Green Jadeite

Jadeite, NaAl(Si2O6)

Greenstone

Metabasalt

Likely altered volcanic rock (greenstone)

Chlorite–epidote–actinolite-rich metavolcanic rock; exact identification requires testing

Weathered greenstone (metamorphosed mafic rock)

Chlorite- and epidote-bearing metabasalt; exact identification requires examination

Dragon Blood Jasper (Dragon Stone)

Epidote-Piemontite/Quartzite Rock

Likely serpentine or weathered greenstone pebble

Serpentine-group minerals, chiefly antigorite/lizardite; possibly chlorite–actinolite greenstone

Greenstone pebble

Likely chlorite- and/or actinolite-bearing metamorphic rock; exact composition cannot be determined from the image.

Rounded blue-gray stone, likely slate or fine-grained metamorphic rock

Probable slate/phyllite; composition mainly quartz, mica, and feldspar

Pale-green schist fragment

Chlorite–sericite schist, possibly containing epidote or actinolite

Anthracite

Anthracite coal

Foliated metamorphic rock, likely slate or phyllite

Fine-grained metapelite; commonly quartz–mica–chlorite with possible graphite

Greenstone / Epidosite

Metamorphosed Mafic Igneous Rock (Epidote-Chlorite group)

Schist (Greenschist / Mica Schist)

Foliated Metamorphic Rock (rich in chlorite, muscovite, and quartz)

Greenstone

Metabasalt / Chlorite schist

Greenstone Pebble

Metabasalt / Greenstone

Greenstone

Metabasalt

Greenstone (Diabase or Metabasalt)

Metamorphosed Mafic Igneous Rock

Prehnite

Prehnite, Ca2Al(AlSi3O10)(OH)2

Greenstone (likely greenschist)

Chlorite–actinolite–epidote-rich metabasalt; mineral proportions cannot be confirmed from the photo

Rough Emerald (Beryl)

Emerald (Be3Al2(SiO3)6 with Cr/V impurities)

Likely greenstone (metamorphosed mafic rock)

Greenstone; commonly chlorite–actinolite–epidote–albite assemblage

Water-worn greenstone pebble

Greenstone (metamorphosed mafic volcanic rock; commonly chlorite–actinolite–epidote-bearing metabasalt)