The experienced mineralogist or geologist.brings to the 1- dentification of a mineral' specimenta background of basic knowledge and a degree of familiarity with the p_roblem which enable him to select and reject information almost subcon• sciously. For liim a superficial examination of the specimen usually suffices to reduce the poasibilitjes to …
Clays are earthy, fine grained rocks composed mainly of minerals of secondary origin - the clay minerals - among which the most predominant are the hy• drous aluminum silicates. The clay minerals, formed by the chemical weathering or alteration of aluminous minerals such as feldspar and mica, are…
Gypsum is a hydrous calciu~ sulphate (CaS04.2HiO), which, when calcined at temperatures ranging from 250° to 400°F, releases three quarters of its chemically • combined water. The resulting hemihydrate of calcium sulphate, commonly referred to as plaster of paris, when mixed with water, can be mo…
Geoscience has a vital role to play in underpinning the social, economic and indus• trial infrastructure of nations, now and as we move into the 21st century. If we are to have the mineral and energy resources to sustain a global population of 10 billion or more; if we are to manage the fragile environment we cohabit, mitigate against the…
It is known that on the occasions of big eruptions, an enormous volume of earth crust material extrudes to the earth surface in the forms of lava flows and fragmental ejecta. The extrusion of lava is always accompanied by a movement of substances of the earth crust down beneath, resulting in the deformati…
Peningkatan kebutuhan kalium untuk industri pupuk dalam negeri dapat terpenuhi dengan melakukan eksplorasi batuan pembawa kalium secara terus menerus sehingga ditemukan daerah potensi baru di Indonesia. Batuan pembawa kalium di Kecamatan Cluwak, Kabupaten Pati, Provinsi Jawa Tengah merupakan salah satu daerah prospek dari beberapa daerah di Kabupate…
Panas bumi merupakan sumber energi yang ramah lingkungan dan memiliki kecenderungan tidakakan habis selama kondisi lingkungan geologi dan hidrologi dapat terjaga keseimbangannya. Indonesia merupakan salah satu negara yang memiliki potensi panas bumi •-yang cukup melimpah, tercatat hingga tahun 2018 tetdapat 349 lokasi s…
Krisis energi dunia yang semng dengan perkembangan industri yang pesat telah memicu pencarian sumber energi baru yang sekaligus terbarukan. Menyusul semakin berkurangnya juga ketersediaan energi . fosil di dunia dan besarnya dampak penggunaan energi fosil terhadap penurunan kualitas lingkungan. Hal tersebut mendorong beberapa negara di dun…