Sedimentary (Man Made Conglomerate)

Man-made Jewelry Charm (Enameled Metal)

Not a natural mineral; composed of base metal alloy (likely zinc or brass) and epoxy resin/enamel.

Cullet Glass (Man-made Glass Slag)

Amorphous Silica (SiO2) with chemical additives

Weathered sandstone or conglomeratic sandstone

Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by iron oxides and silica/calcite

Brecciated polymictic rock, possibly impact breccia

Polymictic breccia; exact lithology indeterminate from image

Conglomerate (possibly fossiliferous limestone breccia)

Polymictic conglomerate; clasts commonly quartz, chert, and carbonate cement (exact identification requires testing)

Conglomerate with Native Copper

Clastic Sedimentary Rock with Native Copper (Cu)

Jasper and Quartz conglomerate

Silicon Dioxide (SiO2) with iron oxide impurities

White Quartz Pebbles

Quartz (Silicon Dioxide, SiO2)

Weathered conglomeratic sandstone

Polymictic conglomerate or pebbly sandstone, likely iron-stained

Milky Quartz in Conglomerate Matrix

Silicon Dioxide (SiO2) within Clastic Sedimentary Rock

Puddingstone

Conglomerate (Silicon Dioxide - SiO2 with various inclusions)

Chert Breccia

Brecciated Chert (SiO2)

Chert Breccia

Brecciated Microcrystalline Quartz (SiO2)

Cobalt Glass Slug (Man-made Glass)

Amorphous Silica with Cobalt Oxide (SiO2 + CoO)

Man-made Metal Pin (Non-geological)

Antimony-Lead Alloy or Zinc/Brass Base with Electroplating

Brecciated stone pebble

Breccia

Cardstock (Paper)

Cellulose (C6H10O5)n

Brecciated marble (decorative stone slab)

Calcite-rich marble breccia; chiefly calcite (CaCO₃), potentially with dolomite and minor iron oxides

Quartz Pebble

Silicon Dioxide (SiO2)

Fossilized bivalve in sandstone/conglomerate

Indeterminate fossil mollusk, likely Bivalvia, preserved in lithified siliciclastic sediment

Weathered quartz-rich sandstone (likely ferruginous sandstone)

Quartz arenite to subarkose; mainly SiO₂ quartz with iron-oxide cement

Conglomerate (polymictic, possibly metamorphosed)

Polymictic conglomerate; clasts cemented in a dark, likely quartz-rich matrix

Breccia

Breccia (Clastic Sedimentary Rock)

Breccia (likely quartz-cemented polymict breccia)

Clastic breccia; chiefly angular quartz/feldspar or carbonate clasts in a silica- or carbonate-rich matrix

Weathered polymictic rock fragment, likely granite-rich conglomerate

Indeterminate mixed lithology; apparent granitic clasts containing quartz, feldspar, and dark mafic minerals

Weathered sandstone or arkosic conglomeratic sandstone

Clastic sedimentary rock, chiefly quartz and feldspar grains cemented by silica, calcite, or iron oxides

Red glassy cabochon, likely synthetic ruby or red glass

Uncertain; possible synthetic corundum (Al₂O₃, chromium-colored) or man-made glass

Tumbled opalite (likely synthetic glass)

Opalite; typically man-made opalescent soda-lime glass, not a recognized mineral species

Goldstone (Red/Brown)

Aventurine Glass (SiO2 with Copper inclusions)

Breccia

Clastic breccia, likely fault breccia; composition varies, commonly quartz, feldspar, and lithic fragments cemented by silica or calcite

Limestone Breccia

Sedimentary Breccia (Calcareous)

Unakite Epidote Conglomerate

Epidotized granitic conglomerate

Breccia

Breccia

Quartz Pebble

Silicon Dioxide (SiO2)

Likely weathered granite or granitic gneiss pebble

Granite; chiefly quartz, feldspar, and mica, with possible iron-oxide staining

River Pebble (likely Quartzite or Chert)

Silicon Dioxide (SiO2) crystal conglomerate

Sandstone (likely Conglomerate or Gritstone)

Arenite (SiO2 based)

Blue Chalcedony Cube

Silicon Dioxide (SiO2)

Puddingstone

Conglomerate (typically quartz-rich or jasper-rich)

River Pebbles (Mixed Lithology)

Conglomerate clasts (Silica-rich and Metamorphic assemblages)

Chalk

Calcium Carbonate (CaCO3)

Iron-rich sandstone or ferruginous conglomeratic sandstone

Ferruginous sandstone, primarily quartz (SiO₂) cemented or stained by iron oxides/hydroxides