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Origin of Gypsum-rich Coatings on Historic Buildings

✍ Scribed by J. Sanjurjo Sánchez; C. A. S. Alves; J. R. Vidal Romaní; D. Fernández Mosquera

Publisher
Springer Netherlands
Year
2009
Tongue
English
Weight
746 KB
Volume
204
Category
Article
ISSN
0049-6979

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Origin of the gypsum-rich silica nodules
Origin of the gypsum-rich silica nodules, Moghra Formation, Northwest Qattara depression, Western Desert, Egypt
✍ Essam M. El Khoriby 📂 Article 📅 2005 🏛 Elsevier Science 🌐 English ⚖ 997 KB

Gypsum rich-silica nodules appear in two shale horizons of the Moghra Formation (early Miocene) northwestern Qattara Depression, Western Desert, Egypt. These nodules are gray to milky white in colour, mostly botroidal and rose-like in shape and range in diameter from 2 to 7.5 cm. The silica nodule-b