Metamorphic Rock (Formed From A Fibrous Crocidolite Asbestos)

Wollastonite

Calcium Inosilicate, CaSiO3

Serpentine

Serpentine group (e.g., Antigorite, Chrysotile, Lizardite) - (Mg,Fe)3Si2O5(OH)4

Serpentine (Serpentinite)

Mg3Si2O5(OH)4

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with Iron Oxide)

Green serpentine

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

Dark green metamorphic rock, likely serpentinite

Serpentinite, composed mainly of serpentine-group minerals (antigorite, lizardite, or chrysotile), commonly with magnetite and minor chlorite/talc

Tiger's Eye

SiO2 (Quartz with inclusion of iron oxides)

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2)

Serpentine (polished/tumbled piece)

Serpentinite; chiefly antigorite, lizardite, and/or chrysotile, commonly with magnetite and carbonate minerals

Serpentinite

Serpentinite, dominated by serpentine-group minerals (lizardite, chrysotile, antigorite)

Likely serpentine (serpentinite) pebbles

Serpentine-group minerals, chiefly antigorite, lizardite, and/or chrysotile; commonly Mg₃Si₂O₅(OH)₄, sometimes containing magnetite, chromite, and minor carbonate minerals

Tumbled serpentine

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

Serpentinized ultramafic rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals Mg₃Si₂O₅(OH)₄, with magnetite, olivine, and pyroxene remnants

Greenstone / serpentine-rich metamorphic rock

Likely serpentinite, composed mainly of serpentine-group minerals (antigorite, lizardite, or chrysotile), with possible magnetite and chlorite

Blue Quartzite (Blue Aventurine)

SiO2 (Silicon Dioxide with Dumortierite/Crocidolite inclusions)

Blue Quartzite (Aventurine)

Silicon Dioxide (SiO2) with Dumortierite or Crocidolite inclusions

Blue Quartz (Blue Aventurine)

Silicon Dioxide (SiO2) with inclusions of Dumortierite or Crocidolite

Tiger's Eye

Tiger's Eye (SiO2 with crocidolite inclusions)

Serpentinized ultramafic rock (serpentinite)

Serpentinite, dominated by serpentine-group minerals (lizardite/chrysotile/antigorite), with possible magnetite, talc, and brucite

Tumbled tiger’s eye

Quartz variety, chiefly SiO₂ with fibrous riebeckite/crocidolite pseudomorphs

Serpentine-rich altered rock (likely serpentinite)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnetite, talc, or chlorite

Tumbled serpentine or chlorite-rich pebble

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

Possible serpentine or greenstone pebble

Serpentine-group minerals, chiefly antigorite/lizardite; exact identification requires testing

Likely serpentinite or serpentinized ultramafic rock

Serpentinite; chiefly serpentine-group minerals (antigorite, lizardite, chrysotile), commonly with magnetite and relict olivine/pyroxene

Serpentinite (likely)

Serpentinite, dominated by serpentine-group minerals (chrysotile, lizardite, or antigorite), commonly with magnetite and relict olivine/pyroxene

Veined dark metamorphic rock, likely serpentinite

Serpentinite, predominantly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible quartz, calcite, and magnetite veins

Green-brown metamorphic rock, possibly serpentinite

Serpentinite, chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chlorite, or carbonate

Serpentinite (likely serpentinized ultramafic rock)

Serpentinite, dominated by serpentine-group minerals (antigorite, lizardite, or chrysotile), commonly with magnetite and relict olivine/pyroxene

Weathered ultramafic rock, likely serpentinite

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with magnetite and possible olivine/pyroxene remnants

Polished tiger’s-eye / iron-rich quartzite

Quartz (SiO₂), commonly pseudomorphic tiger’s-eye with limonite/goethite and remnants of crocidolite fibers

Polished tiger iron

Tiger iron: banded quartz–crocidolite/jasper–hematite rock

Tiger's Eye

Pseudomorph of Quartz after Crocidolite (SiO2 with iron inclusions)

Serpentine Jade (New Jade/Olive Jade)

Serpentinite (a rock composed primarily of serpentine minerals) / Mg3Si2O5(OH)4 for Antigorite and Lizardite

Yellow-green serpentine (likely)

Serpentine-group phyllosilicate, commonly lizardite or antigorite; approximate formula Mg₃Si₂O₅(OH)₄

Red Tiger's Eye

Silicified Crocidolite (SiO2 with iron oxide inclusions)

Serpentine-rich metamorphic rock

Serpentinite; chiefly antigorite/lizardite/chrysotile, commonly with magnetite and carbonate

Tumbled greenstone (likely serpentinite or chlorite-rich metamorphic rock)

Serpentinite, commonly dominated by serpentine-group minerals; exact identification requires testing

Serpentinite (Serpentine Rock)

Serpentinite is a rock composed of one or more serpentine group minerals, chiefly antigorite, chrysotile, and lizardite, with the general formula (Mg,Fe)3Si2O5(OH)4. Often includes other minerals like magnetite, talc, and chromite.

Serpentine-rich metamorphic rock

Serpentinite, likely antigorite/lizardite with magnetite and possible chlorite or talc

Weathered serpentinite (likely serpentine-rich rock)

Serpentinite; chiefly serpentine-group minerals, Mg₃Si₂O₅(OH)₄, with possible magnetite and accessory minerals

Likely serpentinized ultramafic rock (serpentinite)

Serpentinite; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), with possible magnetite, chromite, and relict olivine/pyroxene

Polished brown stone, possibly tiger’s eye

Undetermined; tiger’s eye is quartz (SiO₂) with fibrous crocidolite-derived inclusions