IN the middle of the last century much interest was shown in the problem of the genesis of igneous rocks, and especially in the manner of origin of diverse rock-types from a common stock or from a ...

is supplied from igneous rock from Russia, South Africa, Brazil, and Finland. These igneous phosphate deposits are mostly from the Khibiny Alkalic Igneous Complex (Notholt, 1979) and the Kovdor ...

It shows a curious fracture surface due to a heavy gelignite detonation in finely crystalline “trap” rock. So far as I can remember I had seen other examples of this phenomenon, but ...

A rock is an assemblage of mineral grains..... Each tetrahedron may be isolated from one another or they may be bonded together covalently by sharing oxygen atoms between adjacent tetrahedra. In this ...

A rock is intriguing scientists on Mars. The Perseverance rover has discovered a unique striped formation in the Jezero ...

This page is intended to be a list of rock textural and morphological terms.

NASA’s Perseverance rover has discovered a black-and-white striped rock on Mars called ... intrigued by its unique texture and composition, possibly formed through igneous or metamorphic ...

A mysterious “zebra rock” has been spotted on Mars, and researchers have never seen anything like it before on the Red Planet ...

Researchers from the University of Tokyo and elsewhere have found pockets of living microbes in mineral-filled veins within 2-billion-year-old rock from the Bushveld Igneous Complex, South Africa. “We ...

Walk through any Irish city or village and you’ll be surrounded by the evidence of a long and intimate relationship between ...