Crossword-Solution: SYENITES 8 letters, 1 clue 🏆 scrabble score: 11

The Uspallata chain corresponds in geographical position, though on a small scale, with the Portillo line; and its clay-slate formation is probably the equivalent of the mica-schist of the Portillo, there metamorphosed by the old white granites and syenites.

Along with it are many of the distinctive soda-syenites found in the same district, the granites of southern Sweden, and many others.

Complex and parallel formations; (a) Alternate beds of grey and stratified limestone, anthracitic mica-slate, anhydrous gypsum and grauwacke; (b) clay-slate, black limestone, grauwacke with greenstone, syenite, transition-granite and porphyries with a base of compact felspar; (c) Euphotides, sometimes pure and covered with jasper, sometimes mixed with amphibole, hyperstein and grey limestone; (d) Pyroxenic porphyries with amygdaloides and zirconian syenites.

The seventh, of syenites, transparent, of the colour of a beryl and the clear hue of Hymetian honey; and within it the moon was seen, such as we see it in the sky, silent, full, new, and in the wane.

Some of the most recent measurements of the quantities of radium and thorium in the rocks of igneous origin--_e.g._ granites, syenites, diorites, basalts, etc., show that the 125 radioactive heat continually given out by such rocks amounts to about one millionth part of 0.6 calories per second per cubic metre of average igneous rock.