Dalmatian Jasper
Peralkaline Quartz-Feldspar Rock with Arfvedsonite
igneous
Category
Igneous Rock
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Granite
Granite
igneous
Dalmatian Stone
Dalmatian Jasper (Aplitic Perthite)
igneous
Scoria (Lava Rock)
Vesicular Basalt / Scoria
igneous
Red Granite
Granite
igneous
Weathered granitic rock fragment
Likely granite or granodiorite; quartz–feldspar–mica aggregate
igneous
Polished indigo gabbro tower
Indigo gabbro, a coarse-grained mafic plutonic rock composed chiefly of plagioclase and pyroxene, commonly with dark amphibole/biotite minerals
igneous
Orbicular rhyolite (orbicular jasper-like volcanic rock)
Orbicular rhyolite; predominantly quartz, alkali feldspar, plagioclase, and volcanic glass, with concentric spherulitic growths
igneous
Red Scoria
Scoria (Vesicular Basalt/Andesite)
igneous
Weathered granite or granitic rock
Granite; interlocking quartz, feldspar, and mica grains
igneous
Pink Granite
Phaneritic Plutonic Felsic Igneous Rock (Granite)
igneous
Granite
Phaneritic plutonic rock (Quartz, Feldspar, Mica)
igneous
Granite
Granitoid (KAlSi3O8 – NaAlSi3O8 – CaAl2Si2O8 + SiO2)
igneous
Granite
Granite (Phaneritic Quartz-Feldspar Plutonic Rock)
igneous
Dalmatian Stone
Dalmatian Jasper (a misnomer) / Perthitic Feldspar Rock
igneous
Dalmatian Jasper
Dalmatian Stone (a porphyritic peralkaline igneous rock)
igneous
Granite
Phaneritic Igneous Rock (primarily Quartz, Feldspar, and Mica)
igneous
Dalmatian Jasper (Dalmatian Stone)
Perthitic feldspar with Arfvedsonite inclusions
igneous
Weathered granite or granitic rock
Coarse-grained granitic rock, likely granite or granodiorite; identification is provisional from the photograph
igneous
Weathered granite (granite cobble)
Granite, chiefly quartz, feldspar, and mica; dark vein likely mafic mineral concentration or iron-oxide-stained fracture
igneous
Likely weathered granite or granitic pegmatite
Granite; chiefly quartz (SiO₂), feldspar, and mica
igneous
Likely serpentine-rich greenstone
Serpentinite/serpentinized ultramafic rock; chiefly serpentine-group minerals (Mg₃Si₂O₅(OH)₄), possibly with chlorite, talc, magnetite, or epidote
metamorphic
Greenstone (River Pebble)
Metabasalt / Greenschist
metamorphic
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Granite
Phaneritic Felsic Igneous Rock
igneous
Dalmatian Stone
Peralkaline Feldsphathic Igneous Rock
igneous
Pink Granite
Granite (Phaneritic Igneous Rock)
igneous
Dalmatian Jasper
Peralkaline Quartz-Feldspar Igneous Rock
igneous
Dalmatian Jasper
Feldspar porphyry (Microcline and Quartz with Arfvedsonite spots)
igneous
Granite
Granite (Mainly Quartz, Feldspar, and Mica)
igneous
Dalmatian Stone
Dalmatian Jasper (a misnomer for an Aplite with Arfvedsonite spots)
igneous
Granite Pebble
Granite (Phaneritic intrusive igneous rock)
igneous
Glacial Cobble with Granite Inclusion
Porphyritic Basalt or Andesite containing Granitic Xenolith
igneous
Granite
Granite (dominated by Quartz, Alkali Feldspar, and Plagioclase)
igneous
Rounded river pebble
Indeterminate lithic clast; likely weathered sandstone or quartz-rich sedimentary rock
sedimentary
Granite
Granite (Phaneritic Quartz-rich Igneous Rock)
igneous
Likely banded ironstone (possibly a polished or naturally smoothed piece)
Iron-rich chert/jasper with iron oxides; exact identification is uncertain from the small, indirect image
sedimentary
Snowflake Obsidian
Spherulitic Volcanic Glass (SiO2 + impurities)
igneous
Indigo Gabbro (also known as Mystic Merlinite)
Gabbro (composed of Plagioclase Feldspar, Pyroxene, and minor Magnetite/Ilmenite)
igneous
Dyed Dalmatian Jasper (Dalmatian Stone)
Perthitic Feldspar with Arfvedsonite inclusions
igneous
Dalmatian Stone
Dalmatian Stone (a variety of aplite)
igneous