TRENDING NOW. Reports: Life-threatening flooding expands as Harvey moves farther inland. Flooding from Harvey is expected to continue for days following the storm's final landfall in the United States.
Of course, because not a single stone of granite is similar in appearance nor identical to any other cut or piece, there are some very special types. Costa Esmeralda, which is also known as Costa Smeralda in some circles and companies, is one of these granite varieties. Gorgeously pale green in its color, each piece of Costa Esmeralda granite is found in boulder quarries located in the nations of Italy and Iran. It must be mined in these faraway lands, as much of the current supply of Costa Esmeralda is found in the Middle East.
Classification of granites according their magmatic origin results in the formation of two contrasting groups, S-types and I-types. S-types result from the partial melting of metasedimentary source rocks, a process called anatexis or ultrametamorphism.-type granites com from a source which has been subjected to this sedimentary fractionation. Hine et al (1978) used the Kosciusko Batholith to illustrate chemical differences between S-type and I-type granites.