The polarizing microscope is also known as the petrographic or petrological microscope. Polarizing microscope is the principal piece of equipment used by geologists and mineralogists to observe the optical properties of minerals. There are actually numerous microscopes available on the market today but petrographic polarizing microscopes are the most significant kind that is commonly used […]
The chemical formula of mineral Chalcedony is indicated by SiO2 or Silicon Dioxide. Chalcedony actually occurs in every imaginable color that appears more fascinating under polarizing light microscope used in optical mineralogy. Chalcedony is commonly found leaving a white streak when rubbed on a white porcelain streak plate. The hardness measure of the mineral when […]
The chemical formula of Celsian is indicated by BaAl2Si2O8 or Barium Aluminum Silicate. Celsian belongs to the Silicates Group of minerals. It is sometimes found with some calcium and potassium. Celsian is usually found forming a solid solution series with Orthoclase and the intermediary member is hyalophane. Celsian is most commonly found colorless, white, light […]
The chemical formula of Agate is indicated by SiO2 or Silicon Dioxide. Agate is actually a banded, multicolored, variety of Chalcedony. It is most commonly occurring in an infinite amount of color and patterns. It is also important to note that, no two Agates are alike. The extraordinary beauty and uniqueness of Agate is responsible […]
The chemical formula of mineral Aerugite is indicated by Ni9As3O14. Aerugite is found in the walls of furnaces used to roast ore. It is actually usually found at its type of locality at South Terres Mine, St. Austell, Cornwall, England. Aerugite was named for the Greek word for copper rust, an allusion to its appearance. […]
The chemical formula of mineral Afghanite is indicated by (Na, Ca, K)8(Si, Al)12O24(SO4, Cl, CO3)3-(H2O). Afghanite is actually generally associated with the sodalite-group minerals. It is found in its type of locality at Sar-e-Sang luzurite deposit in Afghanistan. It was named after its type of locality. Afghanite is known to crystallize in the hexagonal system […]
The chemical formula of mineral Aerinite is (Ca, Na)6FeAl(Fe+, Mg)6[Si12O36(OH)12H][(H2O)12(CO3)]. Aerinite is actually an alteration product in basalts and andesites as well as in hydrothermal zeolite deposits. It is usually found in its type of locality at Aragon, Caserras, Spain and St. Pandelon, Landes, Spain. Aerinite was named from the Greek word root aer, alluding […]
The chemical formula (Na, Ca)4(Fe++, Ti, Mg)12Si12O40. A primary constituent in sodium-rich alkali volcanic, pegmatites, and other silica-poor igneous rocks. Aenigmatite notably occur at localities including Naujakasik, near the Tunugdliarfik Fjord, and on the Kangerdluarssuk Plateau, in the Ilimaussaq intrusion; from Narssarssuk; and elsewhere. The name of the mineral Aenigmatite was derived from the Greek […]
The chemical formula of mineral Abswurmbachite is indicated by Cu++Mn+++6SiO12. Abswurmbachite is most commonly found in very low-grade, high pressure metamorphic Mn, Al-rich sediments. Abswurmbachite is most commonly found at its type of locality at Milli, Avia and Andros Island, Greece. Abswurmbachite is named after the German mineralogists, Irmgard Abs-Wurmbach. Abswurmbachite is known to crystallize […]
The chemical formula of Abenakiite-(Ce) is indicated by Na26REE6(SiO3)6(PO4)6(CO3)6(SO2)O. Abenakiite-(Ce) was named for the Abenaki Indian tribe, which inhabited the area around Mont Saint-Hilaire. Abenakiite-(Ce) is usually found as a single crystal that is embedded in sodalite in a xenoliths of sodalite syenite. Abenakiite-(Ce) is known to crystallize in the trigonal-hexagonal system of crystal formation. […]
