Sandstone (Ferruginous)
Arenite with Iron-Oxide Cement
sedimentary
Category
Igneous And Fossil
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Sandstone
Arenite (Sedimentary rock composed of sand-sized grains, primarily SiO2)
sedimentary
Sandstone
Arenite (variable SiO2 composition)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone
Arenicola (comprising mostly Quartz, SiO2)
sedimentary
Turritella (Gastropod Fossil)
Turritella (Genus of gastropods), CaCO3 (Calcium Carbonate or Silicified Agate)
sedimentary
Chert (concretionary/nodular variant)
Microcrystalline Quartz (SiO2) with possible fossil or mineral inclusions
sedimentary
Fossil Coral (Pleurodictyum)
Pleurodictyum sp. (Order Tabulata)
sedimentary
Agatized Fossil (Druzy Agate)
Silicon Dioxide (SiO2) replacing organic matter
sedimentary
Limestone (containing Fossil Mold)
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Fossiliferous Chert (Gryphaea Fossil)
Silicon Dioxide (SiO2) with Calcitic Mollusk Remnants
sedimentary
Chert (with small quartz inclusion)
Microcrystalline Silica (SiO2)
sedimentary
Ironstone Nodule (Ironstone Concretion)
Siderite-rich Mudstone (FeCO3) or Limonite (FeO(OH)·nH2O)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Sedimentary Sandstone
Arenite (Sedimentary Rock)
sedimentary
Sandstone
Arenite (principally SiO2)
sedimentary
Sandstone
Arenite (primarily SiO2)
sedimentary
Limestone
Calcium Carbonate (CaCO3)
sedimentary
Slate
Slate
metamorphic
Amber
Succinates (C10H16O)
mineraloid
Sandstone
Arenite (specifically Iron-stained Quartz Sandstone)
sedimentary
Amber
Succinite (Organic Gemstone)
mineral
Sandstone
Arenite (primarily SiO2)
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Amber
Succinite (C10H16O)
mineral
Amber in Matrix
Succinite (Carbon-based organic polymer)
Organic (Sedimentary context)
Chert Pebble (Jasper variety)
Microcrystalline Quartz (SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Amber
Succinite (C10H16O)
mineraloid
Fossiliferous Limestone (Shell Fragment)
Biogenic Limestone (Calcium Carbonate / CaCO3)
sedimentary
Sandstone
Arenite (SiO2 principal)
sedimentary
Limestone
Sedimentary Calcium Carbonate (CaCO3)
sedimentary
Dendritic Agate (Tree Agate)
Chalcedony (Silicon Dioxide, SiO2) with Manganese or Iron Oxide inclusions
mineral
Petrified Wood
Silicified Wood (SiO2 - Silicon Dioxide)
sedimentary
Petrified Wood
Silicified wood (primarily SiO2)
metamorphic
Calamites (Fossilized Horsetail)
Calamites suckowii (Family: Calamitaceae)
sedimentary
Chert Pebble with Inclusion
Microcrystalline Quartz (SiO2)
sedimentary
Shale
Lutaceous Rock (Hydrous Aluminum Silicates)
sedimentary
Petrified Wood
Silicified Wood (SiO2)
sedimentary
Fossiliferous Shale Matrix
Clastic Sedimentary Rock with Brachiopod or Mollusk shell fragments
sedimentary
Amber
Succinite
Organic mineraloid