Pyroxenes are formed either direct or by the reaction of olivine with quartz. Structure Important minerals – Optical Properties Orthopyroxene Clinopyroxene Alteration – Orthopyroxene alter to serpentine or fibrous amphibole. Augite alters to chlorite/ hornblende. Varities – Occurances – REFERENCES –
Olivine is the mineral group crystallizes first during the magma cooling as per Bowen reaction series. It has the general formula X2SiO4 , where X = Fe, Mg, Mn and Ca. with charge of +2. Structure – Olivine solid solution – Because there is similar ionic radius and ionic charge of cations. olivines make a
The North Singhbhum Mobile Belt (NSMB) is a multiple folded, low to medium grade meta-sedimentary and meta-igneous rocks of Proterozoic age (1.0–2.4 Ga) sandwiched between the Archaean (>2.4 Ga) Singhbhum Craton in the south, and the Meso/Neo-Proterozoic (0.9–1.7 Ga) Chotanagpur Gneissic Complex (CGC) in the north by north-dipping ductile shear zones. Clastic sediments with minor volcanics comprising the
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Tissues are the group of cells similar in origin, structure and functions – Meristematic tissues Merismatic tissues are of three types – Permanent tissues Simple permanent tissues – If permanent tissues is made up of similar types of cells, it is called simple tissues. There are three main types of simple tissues – Complex permanent
The algae and Fungi belongs to the plant category Thallophyte that doesn’t contains seed and are also devoid of vascular system – ALGAE FUNGI The study of Algae is called PHYCOLOGY. The study of Fungi is called MYCOLOGY. The algae normally has chlorophyll and autotrophic in nature, They have heterotrophic mode of nutrition Algae always
plants are of many types and can be classified on multiple basis. Here we are sharing a very simplistic way of plant classification – Cryptogams Classification, without seeds Non-vascular plants – Thalophyta and Bryophyta vascular plants – Pteridophyta ‘Mosses [bryophytes] and ferns [pteridophytes] are also called as Amphibian category of plant kingdom.’ Phanerogams Classification, seed
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MP mining officer, 2023 MP Mining Officer 2023 paper MP Mining Officer 2023 answer key
Unit is the chosen standard used for measuring a physical quantity. Units are of two types : Fundamental Units and Derived Units There are few important unit systems , CGS system stands for “centimeter-gram-second”, MKS system stands for ” meter-kilogram-second”, and SI unit system. PHYSICAL QUANTITY SI UNIT SYMBOL Length Meter m Mass Kilogram Kg
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