Sedimentary And Metamorphic Minerals

Mixed Tumbled Stones (Mostly Agate, Jasper, and Quartz)

Silicon Dioxide (SiO2)

Quartz / Quartzite Fragment

Silicon Dioxide (SiO2)

Orange Calcite (likely polished specimen)

Calcite

Tumbled milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz crystal cluster

Quartz (silicon dioxide, SiO₂)

Likely milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz (silicon dioxide, SiO₂)

Milky quartz

Quartz, silicon dioxide (SiO₂)

Blue Apatite

Fluorapatite (Ca5(PO4)3F)

Clear Quartz

Silicon dioxide (SiO2)

Zoisite with Rubellite (Ruby in Zoisite)

Zoisite with inclusions of Hornblende (Anyolite)

Clear Quartz

Silicon Dioxide (SiO2)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Chalcopyrite

Copper Iron Sulfide (CuFeS2)

Yellow chalcedony or quartz fragment

Microcrystalline quartz, SiO₂ (tentative; possibly iron-stained chalcedony)

Specular Hematite with Quartz and Limonite

Hematite (Fe2O3) with Quartz (SiO2) and Limonite (FeO(OH)·nH2O)

Zoisite with Ruby (Anyolite)

Zoisite – Ca2Al3(SiO4)3(OH) with inclusions of Ruby (Al2O3:Cr)

Pyrite-bearing rock (likely pyrite-rich schist or massive pyrite)

Pyrite, FeS₂, possibly in a micaceous metamorphic matrix

Quartz (Milky / Massive Quartz)

Silicon Dioxide (SiO2)

Sandstone with Liesegang Rings

Quartzose Sandstone with Iron Oxide Precipitation

Gravel (Crushed Stone Aggregates)

Mixed Siliciclastic / Carbonate Aggregate

Weathered fine-grained stone, likely sandstone or quartzite

Quartz-rich sandstone (possibly weakly metamorphosed quartzite); predominantly SiO₂

Quartz-rich rock, possibly milky quartz or quartzite fragment

Quartz (SiO₂), potentially quartzite if metamorphic

Quartz-rich pebble

Mostly quartz (SiO₂), possibly a quartzite or vein-quartz fragment

Polished hematite bead (probable)

Hematite, Fe₂O₃

Mixed Tumbled Rocks and Minerals Collection

Mixed Minerals and Rocks (Quartz, Feldspar, Jasper, Agate, Lapis Lazuli, Sodalite, Rose Quartz, Fluorite, etc.)

Quartz

Silicon Dioxide (SiO2)

Pyrite in Quartzite/Graphite Matrix

Iron Sulfide (FeS2)

Pyrite

Iron Sulfide (FeS2)

Weathered quartz-bearing rock, possibly calcite vein fragment

Indeterminate; likely quartz (SiO₂) with carbonate minerals such as calcite (CaCO₃)

Quartz geode or quartz-bearing rock

Quartz (SiO₂), likely in a chalcedony- or basalt-hosted cavity

Rounded gray stone, likely slate or fine-grained sandstone

Probable slate (low-grade metamorphosed shale) or lithic sandstone; exact identification requires testing

Pyrite in Quartz

Iron Sulfide (FeS2) on Silicon Dioxide (SiO2)

Quartz

Silicon Dioxide (SiO2)

Honey-colored quartz cluster

Quartz, silicon dioxide (SiO₂), likely iron-stained or included quartz

Quartz

Silicon Dioxide (SiO2)

Quartz with Inclusions

Silicon Dioxide (SiO2)

White quartz bead strand

Quartz, silicon dioxide (SiO₂), likely milky or translucent quartz; beads are polished and drilled

Quartz pebble

Silicon dioxide (SiO2)

Milky Quartz

Silicon Dioxide (SiO2)

Quartz (Milky/Clear variety)

Silicon Dioxide (SiO2)

Small quartz-rich mineral fragment

Quartz (SiO₂), possibly milky or chalcedonic quartz