Apophysis Definition “Apophysis or epiphysis is an offshoot from a larger, intrusive body.” In geology, an apophysis is a projection or extension of a geological structure, such as a vein, a dike, or a mineral deposit, that extends from the main body into surrounding rocks. The term “apophysis” comes from the Greek word “apophȳsis,” which … Read more
A mineral reserve is a portion of a mineral resource that has been demonstrated to be economically and legally extractable under current socio-economic and operating conditions.
Lithium minerals are naturally occurring compounds that contain economically significant concentrations lithium in various forms, including lithium carbonate, lithium hydroxide, and lithium chloride. The most common lithium minerals include: Lithium Minerals It has been studied those concentrations exceeding 0.5% are feasible to extract lithium. Lithium deposits Lithium deposits are natural concentrations of lithium in rocks, … Read more
What is Granite? Granite is a coarse-grained plutonic igneous rock composed of about 25 percent quartz and roughly 65 percent feldspar, mostly potassium and sodium-rich feldspar. Quartz are roughly spherical in shape, are often glassy and clear to light gray in colour. Feldspar crystals are generally white to gray or salmon pink in colour and … Read more
Actinolite (ac-tin’-o-lite) is a bright-green or grayish-green monoclinic silicate mineral of the amphibole group: Ca2(Mg,Fe)5 Si8O22(OH)2. It may contain manganese. Actinolite is a variety of asbestos, occurring in long, slender, needlelike crystals and also in fibrous, radiated, or columnar forms in metamorphic rocks (such as schists) and in altered igneous rocks. Actinolite was named by … Read more
Metamorphism The mineralogical, chemical, and structural adjustment of solid rocks to physical and chemical conditions which have generally been imposed at depth below the surface zones of weathering and cementation, and which differ from the conditions under which the rocks in question originated. Metamorphism means to “change form,”. In other words, metamorphism is a process … Read more
Three agents of metamorphism are temperature, pressure and chemically active fluids. Metamorphic rocks form by recrystallization in the solid state because of changes in temperature, pressure, or the composition of pore fluids. Agents of Metamorphism The process of metamorphism of rocks happens due to the effects of high temperature, pressure and chemically active fluids. These … Read more
What is permeability? Permeability is the ability of the rock, sediment, or soil for transmitting a fluid. It is a measure of the relative ease of fluid flow under unequal pressure and is a function only of the medium. This property of the rock is due to the interconnected voids present in the rock or … Read more
Framboidal pyrite usually have a spheroidal or sub-spheroidal outer form.
Weathering of rocks is due to the processes of mechanical disintegration and chemical decomposition. It can happen due to different physical, chemical and biological factors of nature.
Chemical weathering is the process by which rocks are decomposed by chemical processes like Hydration, reduction, oxidation, carbonation, etc. All these can be discussed under chemical factors.