Sedimentary And Igneous (Mixed)

Fossiliferous Limestone

Limestone (CaCO3 with Limonite/Goethite staining)

Likely quartz-rich rock fragment

Quartz (SiO₂), possibly iron-stained or mixed with feldspar

Mixed Tumbled Stones Collection

Mixed Silicates and Carbonates (Quartz, Amorphous Silica, Carbonates)

Pyrite-bearing sulfide ore

Pyrite (FeS₂), possibly mixed with chalcopyrite and/or other sulfides

Tumbled mixed mineral specimens, likely quartz-rich rocks

Predominantly quartz (SiO₂), with possible jasper, agate, feldspar, and iron-oxide minerals

Limonite (Iron Ore/Sandstone mixture)

Limonite (FeO(OH)·nH2O) often mixed with Goethite and sedimentary matrix

Asphalt (Bituminous pavement)

Bituminous concrete / Asphalt

Tumbled Carnelian and Quartz Mix

Silicon Dioxide (SiO2) with iron oxide impurities

Mixed mineral and rock collection, including likely amethyst and assorted tumbled stones

Unidentified mixed specimens; visible purple quartz is likely amethyst (SiO₂)

Mixed mineral and rock specimen collection

Assorted silicates, carbonates, oxides, and sulfides; individual species cannot be reliably identified from this image

Mixed polished/tumbled stones; likely blue calcite, red carnelian, and gray/blue quartz or agate

Probable calcite (CaCO₃), chalcedony/quartz (SiO₂), and iron-colored chalcedony

Green-and-gold apatite-bearing rock, possibly epidote skarn

Apatite-group mineral, commonly fluorapatite (Ca₅(PO₄)₃F), with probable epidote and quartz; exact identification requires testing

Quartz-rich metamorphic rock, likely mica schist or quartzite

Quartz (SiO₂) with mica, feldspar, and possibly iron-oxide staining

Weathered iron-rich rock, possibly hematite-bearing breccia

Hematite (Fe₂O₃)-rich lithic fragment; exact host rock is uncertain from the image

Botryoidal chalcedony (possibly agate/geode material)

Chalcedony, microcrystalline quartz (SiO₂)

Mixed Mineral and Fossil Collection

Multi-specimen assemblage (SiO2, CaCO3, FeS2, etc.)

Mixed Chalcedony and Jasper Bracelet (possibly 'Ocean Jasper' or similar banded variety for brown beads, and blue/grey Chalcedony for the translucent beads)

Chalcedony (SiO2), Jasper (SiO2 with impurities)

Graphite

Graphite (Carbon, C)

Beaded gemstone bracelet, likely amethyst and mixed polished stones

Amethyst: quartz (SiO₂); other beads appear to be assorted quartz/chalcedony or jasper

Tumbled chert or flint

Microcrystalline quartz (SiO₂), commonly chalcedony with possible iron-oxide inclusions

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Clear quartz crystal pendant

Quartz (silicon dioxide, SiO₂)

Rounded pebble, likely mixed lithology

Lithology uncertain; possibly a fine-grained metamorphic or volcanic rock with a quartz-rich/pink feldspar vein or inclusion

Mixed beach-stone collection, primarily quartz-rich pebbles and possible fossils

Likely quartz (SiO₂), quartzite, chert, and carbonate rock; exact identification is uncertain from the image

Mixed weathered field rocks, likely sandstone and shale/slate

Indeterminate clastic rocks; possible quartz-rich sandstone with laminated shale or slate

Mixed River Pebbles and Rock Collection

Polymictic lithic conglomerate, sandstone, and quartz pebbles

Iron-rich concretion (likely limonite/goethite)

Limonite–goethite aggregate; commonly hydrated iron oxides, approximately FeO(OH)·nH₂O

Conglomerate (Greenstone/Pebble Conglomerate)

Polymictic Conglomerate

Pumice

Vesicular volcanic glass (Amorphous silica mixed with various oxides)

Chert (with Epidote/Quartz veining)

Cryptocrystalline silica (SiO2) with Epidote/Quartz inclusions

Mica-rich schist (likely biotite–muscovite schist)

Mica schist; composed chiefly of muscovite and/or biotite with quartz and feldspar

Clear quartz (rock crystal)

Quartz, crystalline silicon dioxide (SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Sodalite

Sodalite: Na8(Al6Si6O24)Cl2

Paving-concrete aggregate with a rounded stone

Polymictic gravel aggregate; the central clast appears to be weathered sandstone or volcanic rock

Red garnet-bearing metamorphic rock

Almandine garnet (Fe₃Al₂Si₃O₁₂), likely in mica schist or quartz-rich matrix

Possible tumbled jasper or iron-rich chert

Microcrystalline quartz (SiO₂), variably mixed with iron oxides

Mixed tumbled river pebbles and beach stones

Polymictic alluvial gravel; components include quartz, chert, jasper, sandstone, and altered volcanic rocks

Mixed beach pebbles and shell fragments

Mostly carbonate rocks, likely limestone/calcarenite, with mollusk-shell bioclasts; exact species cannot be determined visually

Alluvial stream gravel (mixed rock specimens)

Polymictic fluvial deposit; likely mixtures of quartzite, sandstone, shale, chert, basalt, and granite-derived minerals

Mixed river pebbles and quartz-rich specimens

Polymictic fluvial gravel; likely quartz, quartzite, chert, and weathered feldspathic rocks

Mixed River Pebbles (Jasper, Hematite, and Quartzites)

Silicon dioxide (Jasper/Quartz) and Iron oxide (Hematite)