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A hard coarse-grained siliceous sandstone
Answer for the clue "A hard coarse-grained siliceous sandstone ", 9 letters:
gritstone
Word definitions for gritstone in dictionaries
Wiktionary
Word definitions in Wiktionary
n. A form of sedimentary rock, similar to sandstone but coarser.
The Collaborative International Dictionary
Word definitions in The Collaborative International Dictionary
Grit \Grit\, n. [OE, greet, greot, sand, gravel, AS. gre['o]t grit, sant, dust; akin to OS griott, OFries. gret gravel, OHG. grioz, G. griess, Icel. grj[=o]t, and to E. groats, grout. See Groats , Grout , and cf. Grail gravel.] Sand or gravel; rough, ...
WordNet
Word definitions in WordNet
n. a hard coarse-grained siliceous sandstone [syn: grit , gritrock ]
Wikipedia
Word definitions in Wikipedia
Gritstone or grit is a hard, coarse-grained, siliceous sandstone . This term is especially applied to such sandstones that are quarried for building material. British gritstone was used for millstones to mill flour, to grind wood into pulp for paper and ...
Usage examples of gritstone.
On the other side, just past the bend where the gully spilled out onto the trail, there was a deep gorge with a stream at the bottom, and across it a cliff of crumbling, red-brown gritstone, its face patchy and veined with crystal of various colors.
The chamber was typical of Hebridean sea-caves, a simple excavation in Precambrian gritstone accomplished by wave action, having no stalactites or other picturesque features.
A squeak like a knife scraping across an earthenware plate told there was barely any grain left for the rough-keyed gritstone to bite on.
This was not the windswept gritstone edge above the stark and wild Yorkshire moors of her dreams.
But except for a dusting of fine black ash, almost invisible, and a few tiny pieces of gritstone clinging to the arches of her feet, nothing marred the smooth skin.