Geological Microscope Resources

Geological Microscope

• Mineral Brookite
  The chemical composition of mineral Brookite is indicated by the formula TiO2, a Titanium Oxide. This Brookite belongs to the Oxides and Hydroxides mineral class. The Oxides mineral class, of course with the inclusion of the Hydroxides, is considered as a rather diverse class. This class usually includes corundum or minerals that are appear quiteread more...


• Mineral Beudantite
  The chemical composition of mineral Beudantite is indicated by the formula PbFe3AsO4SO4(OH)6, a Lead Iron Arsenate Sulfate Hydroxide. This Beudantite belongs to the Sulfates mineral class. Sulfates are known chemically to contain the sulfate anion with a charge of negative two. This mineral class commonly forms in evaporitic settings where evaporation of water with highread more...


• Mineral Betafite
  The chemical composition of the mineral Betafite is indicated by the formula (Ca,Na,U)2(Ti,Nb,Ta)2O6(OH,F), Calcium Sodium Uranium Titanium Niobium Tantalum Oxide Hydroxide Fluoride. This Betafite belongs to the Oxides and Hydroxides mineral class. The Oxides mineral class, of course with the inclusion of the Hydroxides, is considered as a rather diverse class. This class usually includesread more...


• Mineral Boulangerite
  The chemical composition of the mineral Boulangerite is indicated by the formula Pb5Sb4S11, a Lead Antimony Sulfide. This Boulangerite belongs to the Sulfides and Sulfosalts mineral class. The Sulfides class comprises minerals, which are composed of various metals combined with the element sulfur. The minerals, which belong to this class, are considered economically important asread more...


• The Gemstone Amethyst
  Amethyst is the purple variety of Quartz with chemical composition indicated by the formula SiO2. This Amethyst belongs to the Tectosilicates mineral class. This Amethyst is a very popular gemstone that is commonly less expensive due to its widespread availability. It can be used as a mineral specimen and it can be also cut forread more...