ينتمي العقيق إلى أحجار السلكا ويعد

ينتمي العقيق إلى أحجار السلكا ويعد من الفصيلة غير المتبلورة منها يتألف كيميائيا من ثاني أكسيد السلكون SIO2 ويشوبه أكسيد الحديد وأحيانا بعض النيكل كما قد تكتنفه فقاعات ماء أو غاز وهو يتكون من ترسب محاليل مائية ويتواجد في الحمم البركانية فيملأ التجاويف التي أحدثها انبثاق الغازات أثناء أنجماد الصهارة كما يعثر عليه في الصخور الرسوبية وبين الحصى وهو ذو ألوان متباينة وبريق شمعي شفاف أو نصف شفاف أو معتم.

النتائج (الإنجليزية) 1:

Belongs to alcelica and Garnet stones is amorphous faction which chemically composed of silicon dioxide SIO2 and streaked iron oxide and sometimes also Nickels had been beset by water or gas bubbles which consists of deposition of water and solutions existing in the lava, filled cavities caused by Jet of gases during freezing magma as found in sedimentary rocks and between the gravel and a contrasting color and luster waxy transparent or translucent or opaque.

النتائج (الإنجليزية) 2:

Opal belongs to the stones Asalka and is one of the platoon amorphous them chemically composed of the second silicon oxide SIO2 and tainted by iron oxide and sometimes some nickel may also beset with bubbles of water or gas, which consists of the deposition of aqueous solutions and resides in the lava fills the cavities created by the emergence of gases during Congelation magma As he found in sedimentary rocks and the gravel which has a mixed colors and glitter transparent waxy or semi-transparent or opaque.

النتائج (الإنجليزية) 3:

Silica stones from stone and is one of the species are chemically composed of non crystalline silicon dioxide SIO2 but was some iron oxide and nickel may also involve bubbles water or gas which is formed by the deposition of aqueous solutions and inThe supply of volcanic cavities caused by the jet of gas during the Anjmad magma as found in sedimentary rocks and gravel with different colors a half waxy and translucent or transparent or obscure.