Basalt with Quartz Veining
Aphanitic Mafic Igneous Rock (primarily Plagioclase and Pyroxene)
igneous
Category
Igneous Rock (Volcanic Glass)
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Obsidian
Volcanic glass (SiO2-rich)
igneous
Diorite
Diorite (plagioclase-rich phaneritic rock)
igneous
Greenish rock with white veins, possibly epidote or chlorite bearing rock with quartz/calcite veins
Altered mafic rock or Epidosite
metamorphic or igneous alteration
Basalt (Vesicular)
Mafic Volcanic Rock (rich in Magnesium and Iron)
Igneous
Basalt
Basalt
igneous
Basalt
Basalt
igneous
Basalt
Basalt
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz with Sulfide Inclusions
Silicon Dioxide (SiO2) with metallic mineral inclusions
mineral
Muscovite Mica
Muscovite (KAl2(AlSi3O10)(OH)2)
mineral
Pumice
Pumice (a highly vesicular volcanic rock)
igneous
Diorite
Plutonic Igneous Rock (NaAlSi3O8, CaAl2Si2O8)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Diorite
Diorite (Intermediate intrusive igneous rock)
igneous
Quartz Vein in Host Rock
Quartz (SiO2) in Mafic or Sedimentary Matrix
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Granite Cobble
Felsic intrusive igneous rock
igneous
Basalt (Stream Pebble)
Mafic Volcanic Rock (composed mainly of plagioclase feldspar and pyroxene)
igneous
Quartz
Silicon Dioxide (SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Bull Quartz)
Silicon Dioxide (SiO2)
mineral
Drill Core (Basalt or Andesite)
Volcanic porphyry (mafic to intermediate)
igneous
Scoria (Vesicular Basalt)
Scoria (Hydrated silicate volcanic rock with iron and magnesium)
igneous
Basalt with Epidote/Quartz Vein
Mafic Volcanic Rock with Hydrothermal Veining
igneous
Graveler (Fictional Interpretation)
Mons calcarius anthropomorphus
igneous
Agate
Silicon Dioxide (Chalcedony), SiO2
sedimentary
Greenstone (River Pebble)
Metabasalt / Greenschist
metamorphic
Clear Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Basalt
Aphanitic mafic volcanic rock (primarily plagioclase feldspar and pyroxene)
igneous
River Basalt (Cobble)
Mafic Igneous Rock (Fine-grained Basalt)
Igneous
Basalt
Basalt (principally Plagioclase Feldspar and Pyroxene)
igneous
Basalt with vesicles
Vesicular Basalt
igneous
Basalt River Cobble
Basalt
igneous
Jasper
Silicon dioxide (SiO2)
mineral
Scoria
Highly vesicular mafic volcanic rock
igneous
Copper slag or vesicular basalt with copper minerals
Industrial slag / Basaltic matrix with secondary copper minerals
igneous