Ottrelite: Properties and Occurrences
Ottrelite is a form of chloritoid. Its empirical formula is (Mn, Fe, Mg)2Al4Si2O10(OH)4. It was originally described as a Mn-rich, but not necessarily Mn-dominant chloritoid,…
Geographic Minerals
Coral Reefs’ ‘Taste’ and ‘Smell’ Provide Insights into a Dynamic Ecosystem
Coral reefs are biodiversity hotspots that are incredibly productive due to the large number of creatures that interact at the same time. A group of…
Osmium: Properties and Occurrences
Osmium is a lustrous, silvery metal that belongs to the platinum group of metals. It has the chemical symbol Os and the atomic number 76.…
Otavite: Properties and Occurrences
Otavite, also known as CdCO3, is a rare cadmium carbonate mineral. It is a mineral composed of cadmium carbonate and isostructural with calcite. It is…
Osarizawaite: Properties and Occurrences
Osarizawaite is a greenish-yellow sulfate mineral with the chemical formula: PbCuAl2(SO4)2(OH)6. It has rhombohedral crystals. It is a rare secondary mineral found in the zone…
Orthoclase: properties and Occurrences
Orthoclase (formula KAlSi3O8) is a tectosilicate mineral that contributes to the formation of igneous rock. It is one of the most abundant continental crust rock-forming…
A Dow-Like Index for Energy Prices could Ease the Transition to Renewable Energy
Fossil fuels have grown in importance in energy generation since the early industrial revolution in the mid-1700s. However, environmental concerns about the use of fossil…
Orpiment: Properties and Occurrences
Orpiment is an orange-yellow arsenic sulfide mineral with the formula As2S3. It is a rare orange to lemon-yellow mineral composed of arsenic trisulfide. It is…
Olivine: Properties and Occurrences
The mineral olivine has the chemical formula (Mg2+, Fe2+)2SiO4 and is a magnesium iron silicate. It refers to a class of rock-forming minerals found in…
Researchers Tested a Novel Technique in a Seabed Location to the Probability of Methane Hydrate Deposits
When burned, methane hydrate, an ice-like solid comprised of compressed natural gas, burns and is found on the seafloor and in Arctic permafrost. Methane hydrate,…
Ordoñezite: Properties and Occurrences
Ordoñezite or ordóñezite is a rare tetragonal zinc antimonate mineral with chemical formula: ZnSb2O6. It is a rare mineral consisting of an antimonate of zinc,…
Oregonite: Properties and Occurrences
Oregonite, Ni2FeAs2 is a nickel-iron arsenide mineral first described from Josephine Creek, Oregon, United States. It is a hexagonal nickel-iron arsenide mineral. It was named…
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