Clay, as a rock term, describes a soft, loose, earthy material containing particles with an average grain size of less than than 0.004 mm (4 mm) in the Wentworth grain size scale and less than 0.002 mm (2 mm) in most soil investigations. Clay is composed mostly of clay minerals, but may also contain quartz, feldspar, carbonates, ferruginous material, and other non-clay materials. All clays, apa...

Mineralogical and chemical analyses of three textural varieties of pyrophyllite samples collected from Baliadihi mine of Keonjhar district, Orissa, India are investigated. Mineralogically they consist of quartz, pyrophyllite, altered feldspar as major minerals and muscovite, chlorite, tourmaline, hematite etc. as minor minerals. The samples exhibit compositional variation of SiO2 65.56 71.66%, ...

At the present time, computer graphics demonstrates a lot of achievements in physically correct rendering of opaque objects and optically isotropic transparent and translucent objects (such as glass, diamond, or water). This paper examines the current state of art in the algorithms for physically accurate calculation of images of 3D scenes including transparent optically anisotropic objects (fe...

We present a library of generic monadic constructs for embedded languages. It is an extension of Syntactic, a Haskell library for defining and processing generic abstract syntax. Until now, Syntactic has been mostly suited to implement languages based on pure, side effect free, expressions. The presented extension allows the pure expressions to also contain controlled side effects, enabling the...

Minerals are defined as naturally occurring, inorganic, solids with a definite chemical composition and a regular, internal crystalline structure. The keys to this definition are the chemical composition and the crystalline structure. Different chemical compositions result in different minerals. A good example is the mineral plagioclase. Plagioclase is a member of the feldspar group, but there ...