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Arsenopyrite in older literature may be referred to as mispickel, a name of German origin. [6] It is also sometimes referred to as mundic, a word derived from Cornish dialect and which also refers to a copper ore, as well as a form of deterioration in aggregate concrete made with mine tailings.
The mispickel at Ivy Tor contained bismuth. [12] Actinolite and feldspar were also found at Ivy Tor. [13] For some time the hill was a shooting moor for grouse and occasional deer. Some granite shooting butts can still be seen on the north and east of the hill.
In geology, felsic is a modifier describing igneous rocks that are relatively rich in elements that form feldspar and quartz. [1] It is contrasted with mafic rocks, which are richer in magnesium and iron. Felsic refers to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium ...
- Hints, Clues and Answers to the NYT's 'Mini Crossword' Puzzle. Related: Today’s NYT ‘Strands’ Hints, Spangram and Answers for Thursday, February 13. Did You Miss a Few Days?
Move over, Wordle, Connections and Mini Crossword—there's a new NYT word game in town! The New York Times' recent game, "Strands," is becoming more and more popular as another daily activity ...
Feldspar (/ ˈ f ɛ l (d) ˌ s p ɑːr / FEL(D)-spar; sometimes spelled felspar) is a group of rock-forming aluminium tectosilicate minerals, also containing other cations such as sodium, calcium, potassium, or barium. [3] The most common members of the feldspar group are the plagioclase (sodium-calcium) feldspars and the alkali (potassium ...
The grey and white crystals are quartz and (limited) feldspar. Metamorphism is the transformation of existing rock (the protolith ) to rock with a different mineral composition or texture . Metamorphism takes place at temperatures in excess of 150 °C (300 °F), and often also at elevated pressure or in the presence of chemically active fluids ...
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