Secondary Minerals definition of Secondary Minerals in the Free Online Encyclopedia.

Secondary Minerals

minerals formed by the chemical disintegration or displacement of minerals evolved earlier. The formation of secondary minerals is common in nature, especially in the surface zones of the earth’s crust during the processes of hypergenesis, and is also linked to changes in the physicochemical parameters of mineral formation.

The transition into secondary minerals can occur without a change in the quality of the composition of the substance— for example, the transition of chalcopyrite CuFeS₂ into the secondary bornite CuFeS₄. More frequently, however, transition is accompanied by the removal and exchange of substance from the surrounding medium—for instance, the formation of covellite Cu₂S CuS₂ through chalcopyrite, malachite Cu₂[CO₃](OH)₂ through atacamite CuCl₂ 3Cu (OH)₂, and kaolin through feldspar. Secondary minerals can also be formed during a purely physical change in the crystalline structure of a substance, retaining its chemical composition: cubic chalcosine changes to rhombic chalcosine, high-temperature cubic leucite changes to low-temperature rhombic leucite.

There are various forms of secondary minerals. These are powdery or other masses or pseudomorphs which retain the external form of the primary mineral while the substance is replaced by a new one.

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No references found			Each layer brought with it a unique set of secondary minerals, some of which altered the appearance of the basic mineral ? Agates and Their Role Is Contemporary Costume Jewelry by Larry Johnson / Reference and Education community Usually, jasper specimens contain traces of secondary minerals including iron, manganese and chromium. The Charm of Jasper Jewelry by Dale Arnold / Fashion, accessories and textiles community The salts were deposited in layers of varying thickness, each layer containing secondary minerals or impurities (besides by primary mineral ? Agate - Common Stone Uncommon Beauty by Dale Arnold / Women's issues/gender studies community			secondary grinding secondary growth secondary hardening secondary haulage secondary high explosive secondary hydrogen atom Secondary Hypertension secondary hypothermia secondary index secondary interstices secondary ion mass analyzer secondary ion mass spectrometer secondary ionization coefficient secondary item secondary key secondary light source secondary limestone secondary lobe secondary low Secondary Measuring Instrument secondary member secondary meristem secondary metabolite secondary metal secondary mineral Secondary Minerals secondary oil recovery secondary optic axis secondary periderm secondary phloem secondary photocurrent secondary plant product secondary plasticizer secondary pollutant secondary porosity secondary port Secondary Quartzite secondary radar secondary radiation secondary rainbow Secondary Raw Material secondary recovery secondary reference fuel secondary reflection Secondary Refrigerant secondary reinforcement secondary rescue facilities secondary reserves secondary root secondary school secondary sewage sludge			Secondary market Secondary market Secondary Market Services Secondary market trend Secondary market trends Secondary marketing Secondary markets Secondary master Secondary Materials and Recycled Textiles Association Secondary Mathematics Assessment and Resource Database Secondary Maximum Contaminant Level Secondary Maximum Contamination Level Secondary Meaning Secondary Means of De-Energization Secondary Measuring Instrument secondary member Secondary membrane of tympanum Secondary membrane of tympanum Secondary membrane of tympanum secondary meristem secondary meristem Secondary metabolite Secondary metabolites secondary metal Secondary meteor Secondary Method Training Secondary Military Occupational Specialty secondary mineral Secondary Minerals Secondary mirror Secondary Mirror Assembly Secondary Mirror Control Electronics Secondary Mission Controller Secondary modern secondary modern school secondary modern schools Secondary Mortgage Loan Law Secondary mortgage market Secondary mortgage market Secondary Mortgage Market Enhancement Act Secondary Mortgage Markets Secondary motor cortex Secondary motor cortex Secondary motor cortex Secondary Multifunctional Display secondary myocarditis secondary myocarditis secondary myocarditis secondary narcissism secondary narcissism secondary narcissism secondary narcissism Secondary National Ambient Air Quality Standards Secondary National Strategy Secondary Navy Enlisted Classification Secondary Neutral Mass Spectrometry Secondary Next Of Kin secondary nondisjunction Secondary Normal Pressure Hydrocephalus

Secondary Minerals

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