The horizontal limestone and sandstone series still continue for a distance; but they are covered with large blocks of sienite and granite.
This mineral assumes its crystalline form, in large areas of the sienite rock.
At a place called the Narrows, the river rushes between alpine peaks of sienite and black hornblende rock, which lies in huge and confused heaps, plainly indicating ancient volcanic action.
Vast blocks of the red sienite have been detached, and scattered southwardly over the secondary rocks, apparently by the force of some antique deluge, setting from the north.
The principal elevations consist of red sienite and greenstone, lying in their usual forms of mountain masses.
The red sienite of the north joins the black gneiss of the south.
Here, all around us, was red; we were entirely within the sienite formation.
Now at Broad Haven the gneiss and the red sienite join, and the strata in places seem as if welded together or fused by fire.
Sienite cropped out on the flats between these two ranges.
Farther down sienite was observed, which contained so much hornblende as to change occasionally into hornblende rock, with scattered crystals of quartz.
I observed a fine sienite on several spots; it is of a whitish colour, and contains hornblende and mica in almost equal quantities; granite was also seen, and both rocks probably belong to each other, the presence of hornblende being local.
The river here formed a large sheet of water; large masses of a white Sienite protruded out of it, opposite the junction of the creek.
A Porphyritic sienite cropped out at the head of the first swamp, about a mile from our last camp.
To let the sailors go ashore with us, we drew up the boat on the rock several feet, and made it fast with a line knotted into a crevice between two fragments of flinty sienite rock at the foot of the crags.
More than half the surface was bare as black sienite could be.
And, 3 of Felsobanya; ores also of auriferous sulphuret of silver, occur in veins of sienite and greenstone porphyry.
The hornblende is the characteristic ingredient, and serves to distinguish sienitefrom granite, with which it has been sometimes confounded; though the felspar, which is generally red, is the more abundant constituent.
The former rises up in elevated barren peaks of sienite and hornblende rock; the latter consists of nearly equally elevated masses of horizontal red sandstone, covered with a dense forest.
Over these sienite and granite, quartz and sandstone boulders were scattered.
Yonder, a mile off, are the Pierres du lacq at low water; the front of Guernsey looming on the left, and Serk rearing its majestic wall of sienite on the right.
It is completely escalloped by bays and coves and ravines, with their essential rocks and promontories, and belted with myriads of outlying rocklets of very eccentric forms, composed chiefly of sienite and porphyry.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "sienite" in a variety of sentences. We hope that you will now be able to make sentences using this word.
