Sandstone-based Concrete Fragment
Cementitious Composite with Sedimentary Aggregate
sedimentary (man-made/anthropogenic)
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
Yellow Jasper
Silicon Dioxide (SiO2) with iron oxide inclusions
sedimentary
Chert (and Quartzite)
Microcrystalline silica (SiO2)
sedimentary
Yellow Jasper
Jasper (Silica-rich Microcrystalline Quartz, SiO2)
sedimentary
Chert with Epidote and Jasper inclusions
SiO2 (Silicon Dioxide) with Ca2(Al, Fe)3(SiO4)3(OH) inclusions
sedimentary
Orthoclase Feldspar
KAlSi3O8 (Potassium Aluminum Silicate)
Mineral
Basalt
Vesicular Basalt
igneous
Granite
Granite (composed primarily of Quartz SiO2, Alkali Feldspar (K,Na)AlSi3O8, and Plagioclase Feldspar)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Quartz
SiO2 (Silicon Dioxide)
mineral
Asphalt (Bituminous Concrete)
Bituminous mix containing aggregates and petroleum-based binder (CnH2n+2)
not a rock (anthropogenic material/technofossil)
Asphalt Chunk (with aggregate)
Bituminous concrete / Anthropogenic conglomerate
sedimentary (anthropogenic/man-made conglomerate)
Bumblebee Jasper
Calcite-Auripigment-Pyrite-Realgar assemblage (Carbonate/Sulphide mixture)
mineral
Asphalt (Road Aggregate)
Asphalt concrete / Bituminous mixture
anthropogenic sedimentary (technolith)
Conglomerate
Conglomerate (SiO2 matrix with various silicate clasts)
sedimentary
Red Jasper
Silicon Dioxide (SiO2) with iron oxide impurities
sedimentary
River Rock (Quartz-dominated)
Silicon Dioxide (SiO2) mixture with varied clastic sediments
sedimentary (alluvial deposit)
Terrazzo (Man-made Composite)
Cementitious or Resin-bound Lithic Composite
sedimentary (artificial)
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Chalcedony (Agate/Jasper mix in host rock)
Chalcedony (cryptocrystalline Silicon Dioxide, SiO2)
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Yellow Quartz (Citrine/Yellow Jasper mix)
Silicon Dioxide (SiO2) with iron oxide inclusions
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Greywacke (River Slikkenstone)
Greywacke (Impure Sandstone)
sedimentary
Schist with Biotite and Quartz
Biotite-Quartz Schist (Fe,Mg,Al silicate mix)
metamorphic
Amazonite (likely mixed with other feldspars/minerals)
Amazonite is a variety of Microcline, which is a tectosilicate mineral, formula KAISi3O8. The mixed beads could include other feldspars or quartz.
Mineral
Terrazzo (with Marble and Granite fragments)
Cementitious or resinous composite containing Calcium Carbonate (CaCO3) and Silicates
sedimentary (man-made composite)
Asphalt (Aggregate)
Bituminous macadam / Concrete Aggregate
sedimentary
River Cobbles (Basalt, Quartzite, and Sandstone mix)
Fluvial detritus (primarily SiO2, Plagioclase, and Pyroxene mix)
Mixed: Igneous and Sedimentary
Blue Apatite
Apatite (Calcium Phosphate) - Ca5(PO4)3(F,Cl,OH)
mineral
Quartz (Engineered Quartz Surface)
Silicon Dioxide (SiO2) based composite
mineral (man-made composite)
Asphalt (Bituminous Concrete)
Asphaltum / Bitumen-Aggregate Matrix
Technonatural composite (often containing sedimentary/igneous aggregate)
Apatite
Fluorapatite (Ca5(PO4)3F)
mineral
Mixed Quartz and Jasper Pebbles
Silicon Dioxide (SiO2)
Mineral
Conglomerate
Conglomerate (clastic sedimentary rock)
sedimentary
Pink Chalcedony (Agate/Jasper blend)
Silicon Dioxide (SiO₂)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Dyed Quartz / Rose Quartz Imitation
Silicon Dioxide (SiO2) with artificial pigment
mineral
Concrete Rubble with Aggregate
Hardened Portland Cement Paste with Coarse Aggregate
Anthropogenic (Man-made)
Glazed Ceramic Tile
Fused Silicate-Clay composite
Synthetic (Man-made material mimicking natural stone)
Granite Sand and Gravel Mix
Phaneritic Felsic Igneous Plutonic Assemblage
igneous
Milky Quartz
Quartz (SiO2)
mineral