Igneous rocks are formed from molten rock called magma. They are mostly crystalline (made up of interlocking crystals) and usually very hard to break. Basalt Basalt is made of fine-grained ...

So not all rocks are formed like sedimentary rocks ... CONNOR: Yes, the Lewisian Gneiss! It started as an igneous rock, which means it was made from magma, the molten rock under the earth ...

The Atlas of Minerals and Igneous and Metamorphic Rocks in Thin-section provides the geology student and geoscientist with ... This Atlas is an indispensable reference textbook for all facilities that ...

FOR some time the need of a text-book of general petrology in English has been acutely felt, owing to the rapid progress which the science has made in theoretical subjects and the inaccessibility ...

Ancient rocks known as massif-type anorthosites have long puzzled scientists, presenting an enigma that has endured for decades and sparked intense debate within the geological community. These vast, ...

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With our ideas of volcanoes we always associate the grand and the terrible ; and a volcanic eruption—a huge piece of artillery, with a mouth perhaps miles in circumference, shooting up rocks and ...

These have been defined as “a diverse category of coarse-grained igneous rocks that consist predominantly of quartz, plagioclase, and alkali feldspar.” Well, all right then. But how do granite and ...

First Phosphate (CSE: PHOS; US-OTC: FRSPF) has posted an initial phosphate resource for its Bégin-Lamarche project in Quebec ...

Mushrooms "aren't just a flavour-packed addition to ravioli or ragu" or a "sparkplug to the occasional psychedelic adventure" ...