Sandstone
Sandstone (clastic sedimentary rock), primarily SiO2
sedimentary
Category
Sedimentary (With Some Aspects Of Mineral Replacement)
Browse sedimentary (with some aspects of mineral replacement) specimens identified by the Rock Identifier community.
Septarian Nodule
Septarian Concretion (CaCO3 with Siderite/Limonite streaks)
sedimentary
Druzy Quartz on Limestone
Silicon Dioxide (SiO2)
mineral
Amethyst
SiO2 (Silicon Dioxide with Iron impurities)
mineral
Chalcedony (specifically Agate or Carnelian variety)
Cryptocrystalline Silica (SiO2)
mineral
Septarian Nodule
Septarian Concretion
sedimentary
Jasper (Petrified Wood variant)
Silicon Dioxide (SiO2) - Microcrystalline Quartz
sedimentary
Septarian Nodule (Septarian Dragon Stone)
Septarian Concretion (CaCO3 + Al2Si2O5(OH)4)
sedimentary
Limestone with Calcite Veins
Calcium Carbonate (CaCO3)
sedimentary
Glauconitic Sandstone
Glauconitic Sandstone (contains (K,Na)(Fe,Al,Mg)2(Si,Al)4O10(OH)2)
sedimentary
Sandstone (Stream Pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone
Arenite
sedimentary
Sandstone (likely Red/Brown Sandstone)
Arenite (SiO2 based)
sedimentary
Sandstone (Quartzose)
Arenite (primarily SiO2)
sedimentary
Quartz (Clear Quartz)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Clear Quartz (Rock Crystal)
Silicon Dioxide (SiO2)
mineral
Sandstone (likely Quartzose Sandstone pebble)
Arenite (primarily SiO2)
sedimentary
Sandstone (lithic/greywacke variant)
Clastic sedimentary rock (primarily SiO2 with rock fragments)
sedimentary
Yellow Chalcedony or River Jasper
Silicon Dioxide (SiO2)
sedimentary
Carnelian (Chalcedony)
Silicon Dioxide (SiO2)
mineral
Banded Calcite (Mexican Onyx)
Calcium Carbonate (CaCO3)
mineral
Quartz pebble (Quartztite fragment)
Silicon Dioxide (SiO2)
mineral
Quartz (Milky/Rose Quartz variety)
Silicon Dioxide (SiO2)
mineral
Hematite
Iron(III) oxide (Fe2O3)
mineral
Celestite (Celestine)
Strontium sulfate (SrSO4)
mineral
Pyrite
Iron Sulfide (FeS2)
mineral
Carnelian
Carnelian (Silicon Dioxide - SiO2)
mineral
Carnelian
Carnelian (Silicon Dioxide: SiO2 with Iron Oxide impurities)
mineral
Quartz Geode Fragment
Silicon Dioxide (SiO2)
mineral
Specular Hematite (Iron Ore)
Iron(III) oxide (Fe2O3)
mineral
Agate / Banded Chalcedony
Agate (Silicon Dioxide / SiO2)
mineral
Fluorite
Calcium Fluoride (CaF2)
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Blue Calcite
Calcium Carbonate (CaCO3)
mineral
Green Calcite
Calcium Carbonate (CaCO3)
mineral
Opal
Hydrated amorphous form of silica (SiO2·nH2O)
mineral
Jasper
Silicon Dioxide (SiO2) with impurities
mineral
Clear Quartz
Silicon Dioxide (SiO2)
mineral
Quartz (Milky or White Quartz)
Silicon Dioxide (SiO2)
mineral
Rhodonite
Manganese Inosilicate (Mn,Fe,Mg,Ca)SiO3
mineral
Chalcedony (Quartz Var.)
Silicon Dioxide (SiO2)
mineral