A mineral is a chemical element or compound that is normally crystalline, formed as a result of geological processes.
Mineral may also refer to:
Canton may refer to:
Orange most often refers to:
Seneca may refer to:
Tate is a group of public art galleries in the United Kingdom.
Wade, WADE, or Wades may refer to:
Alma or ALMA may refer to:
Robinson may refer to:
Mackinac or Mackinaw may refer to:
Nora, NORA, or Norah may refer to:
This is a list of all articles related to geology – Scientific study of Earth's physical composition that cannot be readily placed on the following subtopic pages:
Petrography is a branch of petrology that focuses on detailed descriptions of rocks. Someone who studies petrography is called a petrographer. The mineral content and the textural relationships within the rock are described in detail. The classification of rocks is based on the information acquired during the petrographic analysis. Petrographic descriptions start with the field notes at the outcrop and include macroscopic description of hand-sized specimens. The most important petrographer's tool is the petrographic microscope. The detailed analysis of minerals by optical mineralogy in thin section and the micro-texture and structure are critical to understanding the origin of the rock.
English River may refer to:
Wacker may refer to:
Illite, also called hydromica or hydromuscovite, is a group of closely related non-expanding clay minerals. Illite is a secondary mineral precipitate, and an example of a phyllosilicate, or layered alumino-silicate. Its structure is a 2:1 sandwich of silica tetrahedron (T) – alumina octahedron (O) – silica tetrahedron (T) layers. The space between this T-O-T sequence of layers is occupied by poorly hydrated potassium cations which are responsible for the absence of swelling. Structurally, illite is quite similar to muscovite with slightly more silicon, magnesium, iron, and water and slightly less tetrahedral aluminium and interlayer potassium. The chemical formula is given as (K,H3O)(Al,Mg,Fe)2(Si,Al)4O10[(OH)2·(H2O)], but there is considerable ion (isomorphic) substitution. It occurs as aggregates of small monoclinic grey to white crystals. Due to the small size, positive identification usually requires x-ray diffraction or SEM-EDS analysis. Illite occurs as an altered product of muscovite and feldspar in weathering and hydrothermal environments; it may be a component of sericite. It is common in sediments, soils, and argillaceous sedimentary rocks as well as in some low grade metamorphic rocks. The iron-rich member of the illite group, glauconite, in sediments can be differentiated by x-ray analysis.
Illinois is a state in the United States.
Sweetwater or Sweet Water may refer to:
Silver is a chemical element with symbol Ag and atomic number 47.
Batavia Township is in Kane County, Illinois. It is divided by the Fox River. As of the 2010 census, its population was 35,221 and it contained 12,892 housing units. The western part of the United States Department of Energy's Fermilab is at the township's eastern edge, although most of the facility is in neighboring Winfield Township in DuPage County.
Mineral Township may refer to the following townships in the United States:
