Clay mineralClay minerals are hydrous aluminium phyllosilicates (e.g. kaolin, Al2Si2O5(OH)4), sometimes with variable amounts of iron, magnesium, alkali metals, alkaline earths, and other cations found on or near some planetary surfaces. Clay minerals form in the presence of water and have been important to life, and many theories of abiogenesis involve them. They are important constituents of soils, and have been useful to humans since ancient times in agriculture and manufacturing.
Chlorite groupThe chlorites are the group of phyllosilicate minerals common in low-grade metamorphic rocks and in altered igneous rocks. Greenschist, formed by metamorphism of basalt or other low-silica volcanic rock, typically contains significant amounts of chlorite. Chlorite minerals show a wide variety of compositions, in which magnesium, iron, aluminium, and silicon substitute for each other in the crystal structure. A complete solid solution series exists between the two most common end members, magnesium-rich clinochlore and iron-rich chamosite.
MoselleThe Moselle (moʊˈzɛl , mɔzɛl; Mosel ˈmoːzl̩; Musel ˈmuzəl) is a river that rises in the Vosges mountains and flows through north-eastern France and Luxembourg to western Germany. It is a left bank tributary of the Rhine, which it joins at Koblenz. A small part of Belgium is in its basin as it includes the Sauer and the Our. Its lower course "twists and turns its way between Trier and Koblenz along one of Germany's most beautiful river valleys." In this section the land to the north is the Eifel which stretches into Belgium; to the south lies the Hunsrück.
VermiculiteVermiculite is a hydrous phyllosilicate mineral which undergoes significant expansion when heated. Exfoliation occurs when the mineral is heated sufficiently; commercial furnaces can routinely produce this effect. Vermiculite forms by the weathering or hydrothermal alteration of biotite or phlogopite. Large commercial vermiculite mines exist in the United States, Russia, South Africa, China, and Brazil. Vermiculite was first described in 1824 for an occurrence in Millbury, Massachusetts.
New York (state)New York, often called New York State, is a state in the Northeastern United States. A Mid-Atlantic state, New York borders New England, and has an international border with Canada. With almost 19.7 million residents, it is the fourth-most populous state in the United States and seventh-most densely populated as of 2022. New York is the 27th-largest U.S. state by area, with a total area of . New York has a varied geography.
BiotiteBiotite is a common group of phyllosilicate minerals within the mica group, with the approximate chemical formula . It is primarily a solid-solution series between the iron-endmember annite, and the magnesium-endmember phlogopite; more aluminous end-members include siderophyllite and eastonite. Biotite was regarded as a mineral species by the International Mineralogical Association until 1998, when its status was changed to a mineral group. The term biotite is still used to describe unanalysed dark micas in the field.
TaunusThe Taunus is a mountain range in Hesse, Germany, located north west of Frankfurt and north of Wiesbaden. The tallest peak in the range is Großer Feldberg at 878 m; other notable peaks are Kleiner Feldberg (825 m) and Altkönig (798 m). The Taunus range spans the districts of Hochtaunuskreis, Main-Taunus-Kreis, Rheingau-Taunus, Limburg-Weilburg, and Rhein-Lahn. The range is known for its geothermal springs and mineral waters that formerly attracted members of the European aristocracy to its spa towns.
