Geographic Minerals
Dualite: Properties and Occurrences
Dualite is a very rare and complex mineral of the eudialyte group, its complexity being expressed in its formula: Na30(Ca, Na, Ce, Sr)12(Na, Mn, Fe,…
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Geographic Minerals
Davinciite: Properties and Occurrence
Davinciite is a very rare mineral of the eudialyte group, with the simplified formula Na12K3Ca6Fe32+Zr3(Si2O73OH)Cl2. The formula given does not show the presence of cyclic…
Mathematic
Angle between Two Skew Lines
Angle between Two Skew Lines Skew Lines mean two or more lines which have no intersections but are not parallel, also called agonic lines. Since…
Geographic Minerals
Carbokentbrooksite
Carbokentbrooksite is a very rare mineral of the eudialyte group, with formula (Na,[])12(Na, Ce)3Ca6Mn3Zr3NbSiO(Si9O27)2(Si3O9)2(OH)3(CO3).H2O. It is a trigonal-ditrigonal pyramidal yellow mineral containing calcium, carbon, cerium,…
Geographic Minerals
Aqualite: Properties and Occurrences
Aqualite is a very rare mineral of the eudialyte group, with formula (H3O)8(Na, K, Sr)5Ca6Zr3SiSi(Si24O66)(OH)9 Cl. The formula given does not show the presence of…
Geographic Minerals
Andrianovite
Andrianovite is a very rare mineral of the eudialyte group, with formula Na12(K, Sr, Ce)6Ca6(Mn, Fe)3Zr3NbSi(Si3O9)2(Si9O27)2O(O, H2O, OH)5. It was named after Valerii Ivanovich Andrianov,…
Mathematic
A Surface is Called Curved Surface when it is not Plane Surface – Explanation
A curved surface is considered a large set of points. Every point in the curve has two neighbors excluding the endpoints. Plane Surface is a flat…
Geographic Minerals
Eudialyte: Properties and Occurrences
Eudialyte, whose name derives from the Greek phrase ‘eu dialytos’, meaning “well decomposable”, is a somewhat rare, nine-member ring cyclosilicate mineral, which forms in alkaline…
Geographic Minerals
Eucryptite
Eucryptite is lithium bearing aluminum silicate mineral with formula LiAlSiO4. It is one of the few silicate minerals that have a trigonal symmetry. This symmetry…
Geographic Minerals
Euclase: Properties and Occurrences
Euclase is a beryllium aluminum hydroxide silicate mineral [BeAlSiO4(OH)]. It is not a well-known gemstone but is more well known by mineral collectors. It crystallizes…
Mathematic
Solid Geometry Terms
In mathematics, solid geometry is the traditional name for the geometry of three-dimensional Euclidean space. Examples like cones, cylinders, prisms, pyramids, polyhedra, and spheres. Solid geometry also includes the study of points, lines,…
Geographic Minerals
Euchroite: Properties and Occurrences
Euchroite is a hydrated copper arsenate hydroxide mineral with formula: Cu2AsO4OH·3H2O. It is a vitreous green to emerald green mineral crystallizing in the orthorhombic system.…
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