Mineral (Refined Metal)

Pyrite

Iron Sulfide (FeS2)

Amygdaloidal Basalt

Extrusive mafic igneous rock with amygdules

Quartz Vein in Host Rock

Hydrothermal Quartz (SiO2) in Slates/Schists

Small pale rock fragment

Unidentified, likely a weathered granitoid or quartz-rich stone; image detail is insufficient for a precise identification

Blue topaz-style pendant gemstone

Likely blue topaz (Al₂SiO₄(F,OH)₂); the image cannot confirm the stone or whether it is natural or synthetic.

Gossan (Iron Hat)

Limonitic Gossan (predominantly FeO(OH)·nH2O)

Rose Quartz

Silicon Dioxide (SiO2) with trace impurities of Titanium, Manganese, or Iron

Quartz cabochon turtle pendant

Quartz (SiO₂), likely a translucent variety with natural inclusions

Serpentinite

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

Granite

Felsic intrusive igneous rock

Milky quartz with possible mica or feldspar inclusions

Quartz (SiO₂), likely with minor inclusions

Quartz vein with iron oxides and possible sulfide minerals

Predominantly quartz (SiO₂), with limonite/goethite staining and possible chalcopyrite or other sulfides; the colorful metallic-looking flecks are not identifiable with certainty from the photo.

Gossan / Iron Ore Rock

Hematite / Goethite / Limonite iron oxide assemblage

Polished dendritic agate pendant

Microcrystalline quartz (SiO₂), with dark manganese- or iron-oxide dendrites

Faceted clear gemstone in a gold-colored setting

Unidentified transparent faceted stone; possibly quartz, glass, or another colorless gem

Granite

Intrusive Igneous Rock

Granite

Felsic intrusive igneous rock

Blue-green crystal point, likely fluorite

Fluorite (CaF₂), tentative visual identification

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Milky Quartz

Quartz (Silicon Dioxide, SiO2)

Iron-oxide-rich weathered rock

Limonite/goethite-bearing ironstone; chiefly hydrated iron oxides, often FeO(OH)·nH₂O

Aventurine

Quartz (SiO2) with inclusions of Fuchsite

Feldspar-Quartz Rock (likely Pegmatite or Granite)

Feldspar-Quartz composite rock (KAlSi3O8 - SiO2)

Milky Quartz with Iron Oxide Weathering

Silicon Dioxide (SiO2) with Goethite/Limonite coatings

Orpiment

Arsenic Trisulfide (As2S3)

Dark metallic sulfide specimen, possibly galena

Galena (lead sulfide, PbS), identification tentative

Yellow Ochre / Limonite

Limonite (FeO(OH)·nH2O)

Granite

Granite (felsic intrusive igneous rock)

Possible iron-rich meteorite or metallic sulfide-bearing rock

Unconfirmed; candidates include stony-iron meteorite, iron meteorite, or pyrite-bearing terrestrial rock

Cubic Zirconia (CZ) Jewelry

Zirconium dioxide (ZrO2)

Quartz-rich hydrothermal ore rock, likely gold-bearing quartz vein

Milky quartz (SiO₂) with iron-oxide staining and probable sulfide minerals; host rock may be schist or altered granite

Goldstone

Man-made glass infused with copper crystals

Sunstone

Oligoclase (Plagioclase Feldspar), (Ca,Na)(Al,Si)4O8

Opalite

Synthetic Opalized Glass

Gold in Quartz Matrix

Native Gold (Au) with Quartz (SiO2) and Slate/Shale

Lepidolite in Quartz (Lithium-bearing Ore)

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2) and Quartz (SiO2)

Likely weathered copper-bearing rock

Indeterminate from the photo; possibly malachite-bearing rock (Cu₂CO₃(OH)₂)

Copper Ore

Mixed copper sulfides/oxides in gangue matrix

Lepidolite

K(Li,Al)3(Al,Si,3O10)(F,OH)2

Polished orange chalcedony pendant

Chalcedony, microcrystalline quartz (SiO₂), likely orange carnelian or orange agate

Possible weathered metallic mineral specimen

Uncertain; possibly native copper-bearing rock or iron sulfide in a gray host matrix

Granite

Felsic intrusive igneous rock