Igneous

Granite

Granite

Granite

Granite

Sodalite

Na8(Al6Si6O24)Cl2

Apatite

Fluorapatite (Ca5(PO4)3F)

Sugilite

KNa2(Fe,Mn,Al)2Li3Si12O30

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Magnetite (Lodestone variety)

Magnetite (Fe3O4)

Magnetite

Iron(II,III) oxide (Fe3O4)

Basalt

Basalt

Dalmatian Jasper

Aplite with Arfvedsonite inclusions

Dalmatian Jasper

Peralkaline Quartz-Feldspar Rock with Arfvedsonite

Blue Apatite

Fluorapatite / Apatite Group Ca5(PO4)3(F,Cl,OH)

Rose Quartz

Silicon dioxide (SiO2)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Blue Apatite

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

Magnetite

Magnetite (Fe3O4)

Dark Igneous Rock (Likely Basalt or Diabase)

Basalt (extrusive igneous rock) or Diabase (intrusive igneous rock - also known as Dolerite), largely composed of plagioclase feldspar, pyroxene (augite), and sometimes olivine and amphibole. Exact mineralogy would require thin section analysis.

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (potentially Hematite)

Magnetite (Fe₃O₄)

Sodalite

Sodalite - Na8(Al6Si6O24)Cl2

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Magnetite

Magnetite (Fe3O4)

Granite / Igneous Rock Specimen

Phaneritic Igneous Rock

White Topaz

Al2SiO4(F,OH)2

Pyrite

Iron Sulfide (FeS2)

Granite

Granite

Quartz with Host Rock Matrix

Silicon Dioxide (SiO2)

Granite Pebble

Granite

Granite

Intrusive Igneous Rock

Greenstone or Epidote-rich rock

Epidote or Chlorite schist/greenstone

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite (Iron Ore)

Magnetite (Fe3O4)

Magnetite

Magnetite (Fe3O4)

Magnetite (Octahedral Crystal)

Magnetite (Fe3O4)

Magnetite

Magnetite (Fe3O4)

Magnetite

Magnetite (Fe3O4)

Rose Quartz

Silicon Dioxide (SiO2) with trace amounts of titanium, iron, or manganese

Magnetite / Iron Ore

Magnetite (Fe3O4)

Porphyritic Igneous Pebble / Porphyry

Porphyritic Igneous Rock

Dalmatian Jasper

Dalmatian Stone (Aplite with Arfvedsonite)

Granite Pebble

Intrusive Igneous Rock