Chrysocolla (carved)
Cu2-xAlx(H2-xSi2O5)(OH)4·n(H2O)
mineral
Category
Mineral Like Biological Tissue
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Sandstone (Ferruginous)
Arenite (Fe-rich)
sedimentary
Basalt with Epidote (Greenstone)
Amygdaloidal Basalt (Ca2(Al, Fe)3(SiO4)3(OH) inclusions)
igneous
Ironstone Concretion
Siderite or Goethite Concretion
sedimentary
Moss Agate
Silicon Dioxide with inclusions (SiO2 + Fe/Mg/Mn/Chlorite)
mineral
Sandstone
Sedimentary Rock (Quartz arenite)
sedimentary
Eclogite
Eclogite (Omphacite + Pyrope)
metamorphic
Orange Calcite
Calcium Carbonate (CaCO3)
mineral
Citrine Geode Fragment
Silicon Dioxide (SiO2) with iron impurities
mineral
Chrysocolla
Hydrated copper silicate - Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O
mineral
Sandstone (Ferruginous)
Arenite (primarily SiO2 with Fe2O3 staining)
sedimentary
Chrysocolla Cuprite
Cu2-xAlx(H2-xSi2O5)(OH)4·nH2O (Chrysocolla) and Cu2O (Cuprite)
mineral composite
Greenstone / River Siltstone
Metasedimentary Greenstone (Chlorite-rich Siltstone)
metamorphic
Vesicular Basalt
Basalt (Vesicular)
igneous
Mica Schist
Schist (Muscovite-Biotite Schist)
metamorphic
Schist with Garnet inclusions
Garnet-mica-schist
metamorphic
Quartz Geode
Silicon Dioxide (SiO2)
mineral
Amazonite
Microcline (KAlSi3O8) with lead inclusions
mineral
Yellow Jasper
Silicon Dioxide (SiO2) with goethite or iron oxide inclusions
sedimentary
Sandstone (Ferruginous)
Arenite (Fe-oxide cemented)
sedimentary
Quartz / Common Opal Transition
Silicon Dioxide (SiO2)
mineral
Obsidian
Volcanic glass (SiO2 - Silicon dioxide predominant composition)
Igneous
Amethyst
Silicon Dioxide (SiO2) with iron impurities
mineral
Picture Jasper
Silicon Dioxide (SiO2) with iron oxide and silicate minerals
sedimentary
Mica Schist
Schist (primarily Muscovite and Biotite mica)
metamorphic
Sandstone (with Iron Staining)
Clastic sedimentary rock (primarily SiO2)
sedimentary
Sandstone
Arenite (composed primarily of SiO2)
sedimentary
Dyed Agate
SiO2
Mineral
Yellow Ochre / Limonite
Limonite (FeO(OH)·nH2O)
Mineral
Greenstone / Basalt with Amygdule
Amygdaloidal Basalt (altered to Greenstone)
igneous
Sandstone (Banded)
Clastic Sedimentary Rock (primarily SiO2)
sedimentary
Dendritic Agate / Moss Agate
Silicon Dioxide (SiO2) with Manganese/Iron oxide inclusions
mineral
Quartz Geode
Quartz (Silicon Dioxide, SiO2) in a Geode
sedimentary
Diorite (Salt and Pepper Rock)
Diorite
igneous
Druzy Quartz on Host Rock
Silicon Dioxide (SiO2)
mineral
Epidosite with Quartz (Unakite-variant or Jasper)
Epidotized Metasomatite
metamorphic
River Stone (likely Mudstone or Siltstone)
Lutite (Clastic sedimentary rock composed of clay and silt-sized particles)
sedimentary
Black Obsidian
Volcanic Glass (SiO2 + impurities like Fe3O4)
igneous
Prehnite with Epidote
Prehnite (Ca2Al(AlSi3O10)(OH)2) with Epidote (Ca2(Al2,Fe)(SiO4)(Si2O7)O(OH))
mineral
Azurite-Malachite with Limonite
Cu3(CO3)2(OH)2 (Azurite) / Cu2CO3(OH)2 (Malachite)
mineral
Gneiss
Gneiss
metamorphic
Fossilized Bivalve Shell
Bivalvia (Phylum Mollusca)
fossil