Mixed (Predominantly Sedimentary And Igneous)

Mookaite Jasper

Silicified Radiolarite (SiO2 with iron impurities)

Bloodstone (Heliotrope)

Silicon Dioxide (SiO2) with inclusions of Chlorite or Actinolite

Venetian Gold Granite

Phaneritic Felsic Igneous Rock (Granite)

Mixed Mineral Specimens

Mixed Silicates, Oxides, and Phosphates (SiO₂, Ca₅(PO₄)₃(F,Cl,OH), Na₈Al₆Si₆O₂₄Cl₂, etc.)

Banded Agate (Chert/Chaldcedony)

Silicon Dioxide (SiO₂)

Yellow Ochre (Limonite)

Limonite (FeO(OH)qnH2O)

Pink Granite (Gneissic Granite)

Granite (composed primarily of Quartz, K-Feldspar, and Plagioclase)

Granodiorite

Granodiorite (containing Plagioclase, Quartz, K-Feldspar, and Hornblende or Biotite)

Pink Granite

Granite (rich in Potassium Feldspar/Orthoclase)

Concrete rubble

Anthropogenic conglomerate

Glacially transported granite and gneiss boulders

Granite (quartz–feldspar–mica); banded specimens likely gneiss

Copper Ore

Cupriferous Rock / Mixed Mineral Matrix

Quartz with impurities or Host Rock

SiO2 (Silicon Dioxide) with mixed silicates

Assorted polished river pebbles

Mixed lithologies, likely quartzite, chert, jasper, and weathered igneous/metamorphic rocks

Iron-rich concretion or weathered limonite/goethite nodule

Limonite (hydrous iron oxides), commonly dominated by goethite (FeO(OH))

Jasper containing Agate (Jaspagate)

Silicon Dioxide (SiO2)

Jasper / Agate with Petrified Wood Inclusion

SiO2

Hematite

Hematite (Fe2O3)

Breccia

Breccia (Clastic sedimentary rock)

Conglomerate (possibly concrete-like natural breccia)

Lithified, poorly sorted clastic rock with angular to subrounded mineral and rock fragments in a finer matrix

Mookaite Jasper

Silicified Radiolarite (SiO2)

Gravel or Pebble

Clastic Sedimentary Grain (typically composed of Quartz or Silicate minerals)

Polymictic conglomerate

Clast-supported conglomerate, typically quartz- and feldspar-rich in a dark matrix

Dragon Blood Jasper

Epidote with Red Jasper (Quartz-rich aggregate)

Puddingstone

Conglomerate

Polished mixed rock, likely orbicular/epidote-bearing granite or basalt

Uncertain; probable quartz–feldspar–amphibole/epidote aggregate

Granite

Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)

Leopard Skin Jasper

Rhyolite (Silicon Dioxide with impurities), SiO2

Blue Chalcedony

Silicon Dioxide (SiO2)

Mineral and Rock Collection (Assorted)

Mixed collection including Quartz (SiO2), Jasper (SiO2 with impurities), Rose Quartz, and Aventurine

Weathered quartz-bearing rock fragment

Indeterminate; likely quartz-rich granite, gneiss, or pegmatitic rock

Purple Lepidolite with Quartz

Lepidolite (K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2)

Pink Granite

Phaneritic Felsic Igneous Rock

Pink Granite

Phaneritic Felsic Igneous Rock (Granite)

Jasper and Quartz Breccia

Silica breccia (SiO2)

Fossiliferous limestone with silicified fossil material

Bioclastic limestone; likely marine mollusk/coral fragments, locally replaced by chalcedony or calcite

Sodalite

Sodalite (Na8(Al6Si6O24)Cl2)

Mixed beach gravel and sand

Unsorted siliciclastic sediment, chiefly quartz and rock fragments

Tumbled granite or granitic gneiss

Granite/granitic gneiss, chiefly quartz, feldspar, and dark mica or amphibole

Pink Granite

Phaneritic Felsic Igneous Rock (Rich in K-Feldspar)

Weathered granitic rock fragment

Likely granite or granodiorite, composed mainly of quartz, feldspar, and mica

Pebble with dark mineral inclusion

Likely granitic or gneissic quartz–feldspar pebble with a mafic inclusion; exact identification requires testing