Glauconitic Sandstone (Greensand)
Glauconitic Sandstone ((K, Na)(Fe3+, Al, Mg)2(Si, Al)4O10(OH)2)
sedimentary
Category
Mineral, Specifically A Rock Fragment
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Sedimentary Breccia
Clastic Breccia (CaCO3/SiO2 matrix)
sedimentary
Breccia
Breccia
sedimentary
Greenstone Porphyry
Porphyritic Metavolcanic Rock
igneous
Pink Granite
Phaneritic plutonic igneous rock (Alkali feldspar granite)
igneous
Sandstone
Arenite (primarily SiO2)
sedimentary
Ruby in Zoisite
Anyolite
metamorphic
Small quartz-rich mineral fragment
Quartz (SiO₂), possibly milky or chalcedonic quartz
mineral
Weathered brown rock fragment
Indeterminate; possibly weathered granite, gneiss, or iron-stained quartz-rich rock
igneous
Pink Granite
Phaneritic Felsic Igneous Rock (Granite)
igneous
Small marine shell fragment
Calcareous shell, primarily calcium carbonate (aragonite or calcite); exact taxon indeterminate
fossil
Small quartz-rich rock fragment (possibly weathered quartz vein material)
Quartz (SiO₂) in an undetermined host rock; the image is insufficient to identify the host confidently
igneous
Dalmatian Stone
Peralkaline rhyolite
igneous
Unidentified dark pebble
Undetermined; possibly polished basalt, chert, or iron-rich stone
mineral
Sandstone
Arenite (SiO2 primarily)
sedimentary
Pink Granite
Phaneritic intrusive igneous rock (Felsic)
igneous
Serpentine
(Mg,Fe)3Si2O5(OH)4
metamorphic
Small brown mineral fragment, possibly quartz/chert
Uncertain; likely microcrystalline quartz (SiO₂) or a weathered silicate rock
mineral
Granitoid (with Epidote and Orthoclase)
Crystalline Felsic Intrusive Rock (containing SiO2, KAlSi3O8, and Ca2(Al2,Fe)(Si2O7)(SiO4)O(OH))
igneous
Basalt with Epidote Veining
Basalt (Mafic Extrusive Rock) with Ca2(Al,Fe)3(SiO4)3(OH)
igneous
Sandstone (Common Quartz Pebble/Rock)
Sedimentary rock / Quartz arenite
sedimentary
Conglomerate
Conglomerate
sedimentary
Sandstone
Clastic Sedimentary Rock
sedimentary
Sandstone
Sedimentary Clastic Rock
sedimentary
Sandstone (with Siltstone/Greywacke variations)
Sedimentary Rock (Clastic)
sedimentary
Small rounded rock (likely granite or gneiss)
Unidentified coarse-grained silicate rock; likely granitic composition
igneous
Pebble / Rounded Rock
Lithic fragment / Water-worn rock
sedimentary
Green Chalcedony (likely Green Agate or Chrysoprase)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
Mineral
Sodalite
Sodalite (Na8Al6Si6O24Cl2)
mineral
Jasper (specifically Bloodstone/Heliotrope or Dark Green Jasper)
Cryptocrystalline Quartz (SiO2) with inclusions
sedimentary
Pale quartz-rich stone, possibly calcite
Likely quartz (SiO₂) or calcite (CaCO₃); image resolution prevents confident separation
mineral
Sandstone (with potentially high Feldspar/Arkose content)
Clastic sedimentary rock (SiO2 dominated)
sedimentary
Likely weathered quartz-bearing rock fragment
Provisional identification: quartz-rich sandstone or microcrystalline quartz (SiO₂)
mineral
Coarse-grained granite or granitic pegmatite fragment
Granite; primarily quartz, feldspar, and mica
igneous
Sandstone (Iron-stained)
Arenite with Limonite/Hematite staining
sedimentary
Sandstone
Clastic sedimentary rock (primarily SiO2)
sedimentary
Emerald in Matrix (Quartz/Schist)
Beryl (Be₃Al₂Si₆O₁₈) with Chromium/Vanadium impurities
mineral
Milky Quartz
Silicon Dioxide (SiO2)
mineral
Quartz Druse on Basalt Matrix
Silicon Dioxide (SiO2)
mineral
Sandstone
Clastic sedimentary rock (Quartz arenite)
sedimentary
Fossiliferous Limestone (Chert/Clay mixed)
Calcium Carbonate (CaCO3) / Silicon Dioxide (SiO2)
sedimentary
Marble
Recrystallized Carbonate Rock (CaCO3)
metamorphic