Milky Quartz
Quartz (Silicon Dioxide - SiO2)
mineral
Category
Non Geological
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Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Orange Calcite
Calcite (CaCO3)
Mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Druzy/Crystalline)
Silicon Dioxide (SiO2)
mineral
Concrete with Aggregate
Composite construction material; primary matrix is Calcium Silicate Hydrate (C-S-H)
anthropogenic (human-made) sedimentary-like material
Quartz nodule (River pebble)
Silicon Dioxide (SiO2)
mineral
Milky Quartz Fragment
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Quartz Geode Fragment with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz (Clear/Smoky Geode fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Grain/Pebble)
Silicon Dioxide (SiO2)
mineral
Quartz (Yellow/Milky variety)
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Pyrite (Fool's Gold)
Iron Sulfide (FeS2)
mineral
Milk Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Iron-stained)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Clear Fragment)
Silicon Dioxide (SiO2)
mineral
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Porphyritic Basalt or Lamprophyre
Extrusive igneous rock with visible phenocrysts
igneous
Banded Agate (Tumbled Chalcedony)
Silicon Dioxide (SiO2)
mineral
Sandstone (with Iron Staining)
Quartz Arenite / Ferruginous Sandstone
sedimentary
Chert
Microcrystalline Quartz (SiO2)
sedimentary
Chert Nodule
Microcrystalline Quartz (SiO2)
sedimentary
Bauxite
Bauxite (Al2O3·2H2O)
sedimentary
Scoria
Vesicular Basalt / Scoria
igneous
Arkosic Sandstone
Arkose (Clastic Sedimentary Rock)
sedimentary
Oak-grain Laminate (Industrial/Decorative Furniture Finish)
Melamine Resin-impregnated Decorative Paper on Particleboard (Cellulose/Thermosetting Plastic)
not a rock (synthetic material)
Painted River Rock
Anthropogenic-modified Siliciclastic Sedimentary Rock
Sedimentary
Pink Granite
Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Plagioclase)
igneous
Glauconite
(K,Na)(Fe3+,Al,Mg)2(Si,Al)4O10(OH)2
mineral
Quartzite with Iron Inclusions
Metamorphosed Quartz-rich Rock (SiO2 with Fe2O3)
metamorphic
Manganese Oxide Crust on Limestone
Manganese Oxides (e.g., Pyrolusite MnO2 or Romanechite) on CaCO3
sedimentary
Rose Quartz
Rose Quartz (SiO₂)
Mineral
Fossil Assortment and Geological Specimens
Various (including Ammonoidea)
fossil
River Pebble
Polished Rock Fragment
sedimentary
Shale / Mudstone
Sedimentary rock (Claystone / Mudstone / Shale)
sedimentary