Chrysocolla
Hydrated copper phyllosilicate (Cu,Al)2H2Si2O5(OH)4 nH2O
mineral
Category
Sedimentary (Secondary Classification For A Weathered Mineral Specimen)
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Amygdaloidal Basalt
Basalt with secondary mineral infilling (commonly Zeolite, Calcite, or Quartz)
igneous
Psilomelane (Black Hematite varietal)
Barium Manganese Oxide (Ba,H2O)2Mn5O10
mineral
Basalt (with possible Calcite/Quartz veining)
Afanitic Mafic Igneous Rock
igneous
Chert (specifically a weathered Chert nodule or fragment)
Chert; Microcrystalline or Cryptocrystalline Quartz (SiO2)
sedimentary
Prehnite on Basalt
Prehnite - Ca2Al(AlSi3O10)(OH)2
mineral
Chrysocolla on Quartz
Chrysocolla (Cu2−xAlx(H2−xSi2O5)(OH)4·nH2O) often associated with Quartz (SiO2)
mineral
Porphyritic Andesite or Basalt
Porphyritic Intermediate/Mafic Igneous Rock
igneous
Turquoise
Turquoise (CuAl6(PO4)4(OH)8·4H2O)
mineral
Granitoid (with Epidote and Orthoclase)
Crystalline Felsic Intrusive Rock (containing SiO2, KAlSi3O8, and Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
igneous
Quartz (Iron-stained)
Silicon Dioxide (SiO2)
mineral
Basalt (Vesicular)
Basalt (Mafic Extrusive Igneous Rock)
igneous
Granite (Weathered)
Granite (Felsic Plutonic Rock)
igneous
Quartz (Agate/Chalcedony variety)
Silicon Dioxide (SiO2)
mineral
Prehnite
Prehnite (Ca2Al(AlSi3O10)(OH)2)
mineral
Granite
Phaneritic Plutonic Felsic Rock
igneous
Quartz / Quartzite Pebble
Silicon Dioxide (SiO2)
metamorphic
Quartz (River Pebble)
Silicon Dioxide (SiO2)
Mineral
Sunstone
Oligoclase or Andesine (Plagioclase Feldspar) - (Ca, Na)((Al, Si)2Si2O8)
mineral
Agate Jasper
Cryptocrystalline Quartz (SiO2) with impurities
mineral
Sandstone Cobble with Iron Staining
Arenite with Limonite/Goethite coatings
sedimentary
Yellow Quartz Pebble
Silicon Dioxide (SiO2)
mineral
Basalt with Limonite stains
Extrusive mafic igneous rock; Limonite (FeO(OH)·nH2O)
igneous
Aragonite / Calcite Geode
Calcium Carbonate (CaCO3)
mineral
Jasper
Jasper (Silicon Dioxide, SiO2)
sedimentary
Quartz pebble
Silicon Dioxide (SiO2)
mineral
Smoky Quartz Geode
Silicon Dioxide (SiO2)
mineral
Granite (Weathered)
Granitic intrusive rock
igneous
Pink Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Eclogite
Eclogite (Omphacite-Garnet rock)
metamorphic
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Carnelian
Silicon dioxide (SiO2)
mineral
Quartz Pebble
Silicon Dioxide (SiO2)
Mineral
Agate
Agate (Silicon Dioxide, SiO2)
mineral
Banded Chert (Agate/Jasper blend)
Microcrystalline Quartz (SiO2)
sedimentary
Granite
Granite (composed primarily of Quartz, Feldspar, and Mica/Amphibole)
igneous
Milky Quartz with Iron Staining
Silicon Dioxide (SiO2)
mineral
Quartz Pebble
Quartz (Silicon Dioxide, SiO2)
mineral
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
mineral
Quartz Pebble (Sea Glass-like Quartz)
Quartz (Silicon Dioxide - SiO2)
mineral
Gold Nugget
Native Gold (Au)
mineral
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
igneous