Banded Iron Formation (BIF) / Jasper
Banded Iron Formation (SiO2 with Fe2O3 and Fe3O4)
sedimentary
Category
Industrial Byproduct (Anthropogenic Material)
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Rough Quartz
Silicon Dioxide (SiO2)
mineral
Iron-stained Quartz (with Limonite/Hematite)
Silicon Dioxide (SiO2) with Iron Oxide inclusions (FeO(OH) or Fe2O3)
Mineral
Black Tourmaline
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Diamond (in jewelry)
Element Carbon (C)
mineral
Piddock-bored Mudstone
Lutite (Siltstone or Mudstone) with Pholad borings
sedimentary
Limestone Pebble
Limestone (Calcium Carbonate, CaCO3)
sedimentary
Agate
Agatized Chalcedony (SiO2)
mineral
Garnet (Pyrope-Almandine series)
Garnet Group, (Mg,Fe)3Al2Si3O12
mineral
Black Tourmaline (Schorl)
Sodium Iron Aluminum Borosilicate (NaFe2+3Al6(Si6O18)(BO3)3(OH)3OH)
mineral
Quartzite Pebble
Quartzite (SiO2)
metamorphic
Quartzite (River Pebble)
Metamorphic Quartzite (SiO2)
metamorphic
Quartzite (River Pebble)
Metamorphosed Quartz Sandstone (SiO2)
metamorphic
Silver (Native or Alloyed)
Ag (Argentum)
mineral
Fulgurite
Lechatelierite (Silica glass), typically SiO2
mineraloid
Limestone (containing Fossil Mold)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Stilbite
Stilbite-Ca (NaCa4(Si27Al9)O72·28H2O)
mineral
Pegmatite
Granitic Pegmatite
igneous
Quartzite (River Pebble)
Quartzite (SiO2)
metamorphic
Diamond
Diamond (C)
mineral
Quartzite (or Iron-Stained Quartz Pebble)
Silicon Dioxide (SiO2) with Ferric Oxide inclusions
metamorphic
Agate
Agate (Cryptocrystalline variety of Quartz, SiO2)
mineral
Quartzite
Quartzite (primarily SiO2)
metamorphic
Granitic Pegmatite
Granite Pegmatite (coarse-grained intrusive igneous rock)
igneous
Chert / Flint Nodules in Limestone
Silicon Dioxide (SiO2) within Calcium Carbonate (CaCO3)
sedimentary
Red Garnet
Pyrope or Almandine (Silicate group, X3Y2(SiO4)3)
Mineral
Schorl (Black Tourmaline)
Schorl (Sodium Iron Aluminum Borosilicate Hydroxide), NaFe3Al6(BO3)3Si6O18(OH)4
mineral
Garnet-Mica Schist
Garnetiferous Porphyroblastic Schist
metamorphic
Peridot
Olivine (Magnesium Iron Silicate), (Mg, Fe)2SiO4
mineral
Amethyst (Raw Quartz)
Amethyst (Silicon Dioxide with Iron impurities, SiO2)
mineral
Milky Quartz with Iron Inclusions
Quartz (Silicon Dioxide, SiO2)
mineral
Garnet Schist
Almandine-Mica Schist
metamorphic
Iolite (Cordierite)
Cordierite (Magnesium Aluminum Silicate), Mg2Al4Si5O18
mineral
Ferruginous Sandstone (Gerrit)
Arenite with Iron Oxide cementation
sedimentary
Sandstone (Ferruginous)
Arenite (composed primarily of SiO2 with Fe2O3 cement)
sedimentary
Blue Sapphire
Corundum (Al2O3) with traces of Iron and Titanium
mineral
Orthoclase Feldspar
Potassium aluminum silicate (KAlSi3O8)
mineral
Quartzite
Quartzite (Primary mineral: Silicon Dioxide, SiO2)
metamorphic
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartzite
Quartzite (SiO2)
metamorphic
Quartz (Citrine or Iron-Stained variety)
Silicon Dioxide (SiO2)
mineral
Banded Agate
Chalcedony / Silicon Dioxide (SiO2)
mineral