Bentonite Introduction

Bentonite is divided into two, namely Sodium (Na) Sodium bentonite and calcium (Ca) Calcium bentonite                                                

Bentonite: known in Indonesia as a rock (rock clay), which is found in the earth's surface and under the ground (under the ground between 0.5 M s / d 2.5 M) and usually in the hilly and mountainous regions. Start the bentonite sediment because

1.          Weathering :   Formation sediments results bentonite mineral composition of rock weathering conditions., the chemical composition of the water, and the water on the rock origin. And processed as climate, relief and various herbs that are above the rocks. And the result of weathering bentonite formation due to chemical reaction Hydrogen ions (H ⁺ ) in the ground water with silicate compounds. Ions H ⁺ from carbonic acid substances due to decomposition of organic matter in soil

The most important mineral clay formation is plagioclase, potassium, biotite, muscovite and little content of compound Aluminum and Ferro-Magnesia. Plagioclase is very reactive, and numerous major source of cations and silica in groundwater.                                                                       

2.        Solution Hydrotermal :   hydrotermal solution is acidic solution with a content of chloride, sulfur, carbon, and silica. Composition of the solution changed because there is a reaction with limestone rocks into alkaline lye, then carried out and will remain for alkali and alkaline earth elements remain rock formed by the decomposition of origin. The presence of alkali and alkaline earth elements will form Monmorillonit. (Monmorillonit occurs because of the element Magnesium)

3.        Deposition Transformation : bentonite deposits transformed / devitrification occurs volcanic dust perfectly, when the dust deposited in the basin of a lake or sea, volcanic minerals will gradually be having devitrification.

4.        Mineralogy : Bentonite is a clay term Monmorillonit in world trade           

                                  

Bentonite Mine in Pacitan "Punung"

Bentonite is also in production for Bleaching earth (cooking oil purifier) ​​CPO = Crude Palm Oil, Crude CNO = Nut Oil, Soyabean Oil SBO =. in the Natural and active way with the addition of H2SO4 (sulfuric acid) Bentonite for bleaching earth can we get: (Jabar) = Cirebon, Sumedang, Sukabumi, Cianjur, Bogor, Tangerang. (Bantam) = Bojong beads, Gn Kencana, Malimping. (Java) = Cilacap, Purworedjo, Boyolali (DIY) = Kulon Progo, (East Java) = Pacitan, Psychology, Ponorogo, Tulung Agung, Blitar, Malang, Gresik, Tuban                                                                                                                                                                                                                                                                                                                                                                                                                                                                                   BentoniteBentonite for Drilling (oil drilling) in Indonesia recently discovered just in the area: Pacitan /Pringkuku, Terri, Blitar, Malang / Donomulyo, Bogor (Jasinga, sajra /Mekarsari, Cirebon / Madukulupa. But Bentonite Drilling (Sodium Bentonite) that we have still less good than India (Punadi)