Dragon Blood Jasper (also known as Dragon Stone)
Epidotized septarian concretion or Jasper/Epidote breach (typically a combination of Epidote and Pietersite or Red Jasper)
metamorphic
Category
Igneous, Sedimentary, And Metamorphic Mix
Browse igneous, sedimentary, and metamorphic mix specimens identified by the Rock Identifier community.
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Unakite
Unakite Epidosite (composite of Epidote, Orthoclase, and Quartz)
metamorphic
Unakite
Epidotized Granite
metamorphic
Ironstone Concretion / Chert Nodules
Iron-rich Sedimentary Concretion (Fe2O3 / SiO2 mix)
sedimentary
Quartz-rich rock, possibly milky quartz or quartzite fragment
Quartz (SiO₂), potentially quartzite if metamorphic
mineral
Weathered granite (probable)
Granite, a quartz–feldspar–mica intrusive igneous rock
igneous
Diorite (Salt and Pepper Rock)
Diorite
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Septarian Nodule (Dragon Stone)
Septarian Concretion (CaCO3 + CaMg(CO3)2 + SiO2)
sedimentary
Granite (Pebble)
Intrusive Felsic Igneous Rock
igneous
Pyrite-bearing rock (likely pyrite-rich schist or massive pyrite)
Pyrite, FeS₂, possibly in a micaceous metamorphic matrix
mineral
Likely pink granite
Granite, a coarse-grained felsic intrusive igneous rock; typically quartz, feldspars, and mica
igneous
Sandstone (Greywacke/Lithic Sandstone)
Arenite (composed primarily of SiO2)
sedimentary
Tumbled pink granite
Granite (quartz, feldspar, and mica; exact variety uncertain)
igneous
Ironstone Pebble
Sedimentary Ironstone (Hematite/Limonite-bearing)
sedimentary
Quartz (Milky/Smoky mix)
Silicon Dioxide (SiO2)
mineral
Scoria (vesicular basalt)
Basaltic scoria; predominantly plagioclase, pyroxene, olivine, and volcanic glass
igneous
Red Scoria
Vesicular Basalt (Fe – rich)
igneous
Granodiorite
Granodiorite (Intermediate intrusive igneous rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Granite
Granite (Felsic Plutonic Rock)
igneous
Costume Jewelry Gemstones (Emerald-imitation and semi-precious beads)
BeCuAl6Si6O18 (Beryl structure), frequently simulated by glass or synthetic spinel
mineral
Chert (Jasper/Agate mix)
Microcrystalline Quartz (SiO2)
sedimentary
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Serpentine (rough serpentine-rich rock)
Serpentine-group minerals, chiefly antigorite and/or lizardite; composition broadly Mg₃Si₂O₅(OH)₄
metamorphic
Greenstone (likely chlorite-rich metamorphic rock)
Chlorite-bearing greenschist; exact identification requires testing
metamorphic
Serpentinite (often called Jade or Nephrite substitute)
Serpentinite (composed primarily of Antigorite, Lizardite, or Chrysotile)
metamorphic
Serpentine (Nephrite-like River Cobble)
Serpentinite (Hydrous Magnesium Iron Silicate)
metamorphic
Diorite (River Pebble)
Phaneritic Intermediate Igneous Rock (Diorite)
igneous
Obsidian with Slate/Tuff
Volcanic glass (SiO2) with associated pyroclastic rock
igneous
Greywacke with Quartz Veins
Lithic Wacke (SiO2 enriched)
sedimentary
Amethyst and Agate Geode Section
Silicon Dioxide (SiO2) - Crystalline Quartz and Chalcedony
mineral
Dragon Blood Jasper
Epidote with Red Jasper (Quartz variety)
sedimentary
Concrete Fragment
Hardened Portland cement and mineral aggregate
sedimentary (anthropogenic)
Diorite
Diorite (an intrusive igneous rock)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Amethyst, Aventurine, and Quartz Mix
Silicon Dioxide (SiO2) with various inclusions/trace elements
mineral
Polished granite pebble
Granite, a quartz–feldspar plutonic rock
igneous
Unakite
Granite composed of pink orthoclase feldspar, green epidote, and colorless quartz
igneous
Asphalt (Bituminous Concrete)
Bituminous mix / Anthropogenic conglomerate
man-made composite (lithified equivalent of sedimentary)
Sandstone with Liesegang Rings
Quartzose Sandstone with Iron Oxide Precipitation
sedimentary
Demitasse Granite (Diorite-Granite transition)
Intermediate Plutonic Rock (Granodiorite/Diorite mix)
igneous