Sedimentary To Metamorphic

Magnetite or Ironstone Nodule

Magnetite (Fe3O4) or Hematite-rich Sedimentary Nodule

Magnetite (Lodestone)

Magnetite (Fe3O4)

Banded gneiss pebble

Gneiss, likely quartz–feldspar–mica gneiss

Greenschist

Chlorite Schist

Quartz Heart or Arrowhead Shape

Silicon Dioxide (SiO2)

Mica Schist

Schist (Mica-rich Metamorphic Rock)

Pyrite in Matrix

Iron Sulfide (FeS2)

Magnetite

Magnetite (Fe3O4)

Magnetite (Small Granule)

Magnetite (Fe3O4)

Quartz pebble

Silicon dioxide (SiO2)

Blue Apatite

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

Green Aventurine

SiO2

Pyrite in Matrix

Iron Sulfide (FeS2) embedded in host rock

Orange Calcite

Calcium Carbonate (CaCO3)

Orange Calcite

Calcium Carbonate (CaCO3)

Banded gneiss pebble

Gneiss, typically quartz–feldspar–mica assemblage

Quartz with Inclusions

Silicon Dioxide (SiO2)

Galena

Lead Sulfide (PbS)

Clear Quartz (Faceted Crystal)

Silicon Dioxide (SiO2)

Blue Apatite

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

Pyrite (or Arsenopyrite / Ore mineral aggregate)

FeS2 (Iron Sulfide)

Pyrite or Chalcopyrite

Iron sulfide (FeS2) or Copper iron sulfide (CuFeS2)

Greenish Metamorphic Rock (likely containing epidote or chlorite)

Metamorphic rock, possibly epidosite or greenstone

Pyrite

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Kyanite

Kyanite (Al2SiO5)

Gneiss

Metamorphic Gneiss

Apatite

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

Clear Quartz

Silicon Dioxide (SiO2)

Quartz fragment

Silicon Dioxide (SiO2)

Blue Apatite

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

Hematite

Iron Oxide (Fe2O3)

Milky Quartz

Quartz (SiO2)

Gneiss (River Cobble)

Metamorphic Gneiss

Magnetite Ore

Magnetite (Fe3O4)

Quartz Veined Mudstone

Metasedimentary rock with Quartz (SiO2) veins

Gneiss

Metamorphic Gneiss

Quartz (Pink / Rose Quartz variant)

Silicon Dioxide (SiO2)

Quartz with Inclusions

Silicon Dioxide (SiO2)

Orange Calcite

Calcium Carbonate (CaCO3)

Red Calcite

Calcium Carbonate (CaCO3)

Hematite

Iron Oxide (Fe2O3)