Original paper
High temperature mineralization in the bituminous limestone in Maqarin area — north Jordan
Khoury, Hani N.; Nassir, Sobhi
Neues Jahrbuch für Mineralogie - Abhandlungen Band 144 Heft 2 (1982), p. 197 - 213
10 references
published: Aug 1, 1982
DOI: 10.1127/njma/144/1982/197
ArtNo. ESP154014402003, Price: 29.00 €
Abstract
High temperature minerals are found with the bituminous limestone beds, outcropping on the southern bank of Yarmouk river, Maqarin area, north Jordan. The mineral assemblage includes among others: graphite, portlandite, lepidocrocite, bassanite, barite, thaumasite, wollastonite, tobermorite and anorthite. Spontaneous combustion of organic matter in the bituminous limestone was probably responsible for the high temperature mineralization. In the presence of quartz, prograde metamorphic minerals as wollastonite, spurrite and anorthite were formed. In the absence of quartz, calcination of the limestone took place, and highly alkaline waters rich in dissolved cations and anions were responsible for the formation of retrograde metamorphic minerals such as portlandite, ettringite, thaumasite, and barite. The resulting high temperature leads to the recrystallization of calcite and apatite. The assessment of these minerals, some of which are soluble, is of great significance to the intended construction of a dam in the Maqarin area.
Keywords
Mineral assemblage • high temperature • bituminous limestone • prograde metamorphism • retrograde metamorphism; Jordan (Maqarin area)