Mixed: Igneous And Sedimentary

Granite or granitic gneiss boulders

Quartz–feldspar–mica granitoid; possibly banded gneiss

Quartz-rich granitic cobble

Granite or granitic gneiss; primarily quartz, feldspar, and mica

Conglomerate

Polymictic conglomerate; clast-bearing sedimentary rock cemented by silica, calcite, or iron oxides

Rounded sandstone cobble

Quartz-rich sandstone, likely arkosic or lithic sandstone

Copper Ore

Mixed copper sulfides/oxides in gangue matrix

Granite

Coarse-grained felsic plutonic rock, chiefly quartz, potassium feldspar, plagioclase, and biotite/hornblende

Granite

Granitic plutonic rock, chiefly quartz, alkali feldspar, plagioclase, and mica/amphibole

Tumbled pink granite

Granite, primarily quartz, feldspar, and mica; likely pink alkali-feldspar granite

Granite Pebble

Granite (composed primarily of Quartz, Potassium Feldspar, Plagioclase, and Biotite/Amphibole)

Granite Pebble

Intrusive Igneous Rock (Quartz, Feldspar, Mica)

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Granodiorite (Weathered)

Granodiorite

Granodiorite (containing Biotite and Quartz)

Granodiorite (Plagioclase-rich phaneritic intrusive rock)

Mixed landscaping gravel and rounded fieldstones

Lithologically mixed aggregate; likely quartzite, basalt, granite, and weathered sedimentary rocks

Landscaping stones

Unidentified natural fieldstones, possibly granite, gneiss, quartzite, and limestone

Mixed small pebbles and mineral grains

Unidentified detrital sediment; likely quartz-, feldspar-, and lithic fragments

Asphalt aggregate pavement

Bituminous asphalt concrete containing crushed stone aggregate

Asphalt Conglomerate

Artificial Bituminous Conglomerate

Chakra Stone (Composite / Man-made Bonded Gemstones)

Composite of Quartz, Lapis Lazuli, Aventurine, Tiger's Eye, and Jasper (SiO2, (Na,Ca)8(AlSiO4)6(S,Cl,SO4,OH)2, etc.)

Banded Chert / Jasper

Silicon Dioxide (SiO2)

Red Granite

Granite (Felsic intrusive igneous rock)

Garnet

Garnet-group silicate, likely almandine–spessartine; general formula X₃Y₂(SiO₄)₃

Mixed rounded beach gravel

Polymictic alluvial or beach clasts, likely including quartzite, limestone, granite, and other silicate rocks

Pegmatite (Granitic Pegmatite with Quartz, Mica, and Tourmaline/Biotite)

Pegmatite

Conglomerate

Conglomerate (clastic sedimentary rock)

Fancy Jasper

Silicon Dioxide (SiO2) with iron and organic inclusions

Granite Pebble

Intrusive Igneous Rock (Felsic to Intermediate)

Mixed beach pebbles; likely quartzite, granite, and iron-stained metamorphic rock

Predominantly quartzite (SiO₂), granite (quartz–feldspar–mica), and weathered iron-rich rock

Tumbled metallic sulfide mineral specimen, likely pyrite-bearing ore

Likely pyrite (FeS₂) with associated sulfides and host rock; exact identification requires testing

Tumbled granite or granitic gneiss

Granite, primarily quartz, alkali feldspar, plagioclase, and dark biotite/amphibole

Weathered quartz-rich rock, possibly granite or granitic pegmatite

Indeterminate quartz–feldspar aggregate; likely granite/pegmatite

Pink granite

Coarse-grained granitic rock, chiefly orthoclase microcline feldspar, quartz, and dark biotite/amphibole

Pink Granite

Phaneritic Felsic Igneous Rock (composed primarily of K-Feldspar, Quartz, and Mica)

Gabbro (Water-worn pebble)

Gabbro

Pegmatite with Lepidolite and Feldspar

Pegmatite (containing K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2 and KAlSi3O8)

Yellow Jasper

Silicon Dioxide (SiO2) with hydrated iron oxide impurities (Goethite)

Eudialyte

Eudialyte (Na4(Ca,Ce)2(Fe2+,Mn,Y)ZrSi8O22(OH,Cl)2)

Polished carnelian jasper / brecciated jasper

Microcrystalline quartz (SiO₂), chalcedony with iron-oxide pigments and opaque jasper fragments

Diorite

Intermediate Phaneritic Igneous Rock

Likely granite

Granite, a coarse-grained intrusive igneous rock composed mainly of quartz, feldspar, and mica

Tumbled pink granite

Granite, composed mainly of quartz, potassium feldspar, plagioclase, and dark mica or amphibole

Granite

Coarse-grained granitic rock, primarily quartz, alkali feldspar, plagioclase, and dark biotite/amphibole