Banded Slate (Sedimentary Pebble)
Slate (Metamorphosed Shale or Mudstone)
Category
Browse mineral (evaporite) specimens identified by the Rock Identifier community.
Banded Slate (Sedimentary Pebble)
Slate (Metamorphosed Shale or Mudstone)
Sandstone
Arenite (SiO2 with various cementation agents)
Petrified Wood
Silicified Wood (SiO2)
Quartzite
Quartzite (primarily SiO2)
Granite
Granite (Mainly Quartz SiO2 and Feldspar KAlSi3O8)
Hag Stone
Perforated Sedimentary Rock (typically Limestone or Sandstone)
Gossan with Copper Carbonate (Chrysocolla/Malachite)
Ferruginous Oxide (Gossan) with Cu2CO3(OH)2 (Malachite) or (Cu,Al)2H2Si2O5(OH)4 (Chrysocolla)
Quartzite River Rock
Quartzite (primarily SiO2)
Schist
Mica Schist
Green Aventurine
Aventurine (variety of Quartz - SiO2)
Quartz Geode
Silicon Dioxide (SiO2)
Gold Ore (in Quartz/Pyrite)
Native Gold (Au) with Quartz (SiO2) and Pyrite (FeS2)
Milky Quartz with Pyrite inclusions
Silicon Dioxide (SiO2) with Iron Disulfide (FeS2)
Manganese Dendrite on Siltstone
Manganese Oxide (pyrolusite or psilomelane) Dendrites
Diorite
Diorite (Intermediate intrusive igneous rock)
Amygdaloidal Basalt
Amygdaloidal Basalt (Mafic Volcanic Rock)
Schist
Schist (variety likely Mica Schist)
Moss Agate
Silicon Dioxide (SiO2) with mineral inclusions of hornblende or chlorite
Milky Quartz
Silicon Dioxide (SiO2)
Emerald in Matrix
Beryl (Be3Al2Si6O18) with Chromium/Vanadium impurities
Diamond
Carbon (C)
Magnetite
Magnetite (Fe3O4)
Quartz with Hematite Staining
Silicon Dioxide (SiO2) with Ferric Oxide (Fe2O3) inclusions
Gold Quartz (Auriferous Quartz)
Silicon Dioxide (SiO2) with trace Gold (Au) and Iron Oxides
Milky Quartz Pebble
Quartz (Silicon Dioxide - SiO2)
Milky Quartz
Quartz (Silicon Dioxide, SiO2)
Lepidolite
K(Li,Al)3(Al,Si,Rb)4O10(F,OH)2
Milky Quartz
Silicon Dioxide (SiO2)
Diamond
Carbon (C)
Diamond
Diamond (C)
Bismuth
Native Bismuth (Bi)
Dyed Agate
Chalcedony (SiO2)
Diamond
Diamond (pure Carbon, C)
Diamond
Carbon (C) - Native Element
Red Sandstone
Arenite (ferruginous sandstone)
Petrified Wood
Silicified Wood (primarily Quartz / Chalcedony: SiO2)
Greenschist (Greenstone River Pebble)
Greenschist (Chlorite Schist)
Milky Quartz
Silicon Dioxide (SiO2)
Ironstone with Pyrite
Ferruginous Sandstone (Fe2O3) with minor Sulfide minerals (FeS2)
Diamond
Carbon (C)
Diamond (Martapura/Borneo Diamond)
Carbon (C) - Diamond
Diamond (in a jewelry setting)
Carbon (C)