feldspars in English
Quartz is associated most commonly with aegirine and potassium feldspar as well as zircon.
Use "feldspars" in a sentence
1. Many ordinary rocks (feldspars) are Aluminosilicates
2. Feldspar - Feldspar - Identification of specific feldspars: Alkali feldspars can often be distinguished from plagioclase feldspars because most grains of the latter exhibit Albite twinning (see above Crystal structure), which is manifested by parallel lines on certain cleavage surfaces, whereas grains of alkali feldspars do not
3. The feldspars in volcanic lava flows can also be problematic.
4. The Plagioclase Feldspars form a series between Albite and Anorthite.
5. Aluminosilicates with more open three-dimensional structures than the feldspars are called zeolites
6. Feldspars are a broad class of Aluminosilicates, of which microcline, K[AlSi3O8], is a …
7. Optically perthitic intergrowths appear in thin sections cutting saw-tooth or comb-like interfaces of the mantled feldspars.
8. 30 Thermoluminescence is a property of crystalline materials, such as quartz and feldspars, which are found in pottery.
9. 12 When minerals such as quartz and feldspars have received a radiation dose and are then heated, they emit light.
10. Up to 10% cash back · Yehuda Baskin, 1956, A study of Authigenetic feldspars: Journal of Geology, v
11. It is proposed to extend the name amazonite, hitherto used to designate only the green variety of microcline, also to similarly coloured orthoclase and K-feldspars intermediate between orthoclase and microcline and, perhaps, also to other feldspars whose colour is similar to that of microcline-amazonite.
12. Found on both the moon and the Earth, Anorthosite is an igneous rock primarily comprised of plagioclase feldspars
13. Intense albitization occurs in both the altered rock itself, replacing other feldspars and mafic silicates, and as albite Brecciating micro-veinlets
14. When minerals such as quartz and feldspars have received a radiation dose and are then heated, they emit light.
15. Amphibolite--sometimes also referred to as hornblende--is a metamorphic rock that contains amphibole minerals (hence its name) and feldspars
16. It is chiefly composed of feldspars and quartz, but also frequently contains small amounts of hornblende and micas, such as Biotite.
17. Anorthite is the rarest member of the Plagioclase Feldspars of the Feldspar Group of minerals that includes Albite, Amazonite, Andesine, Anorthite, Bytownite, Hyalophane, Labradorite, Moonstone, Oligoclase, Orthoclase, Sanidine and Sunstone
18. Almandine, the most common of the garnets, is deep red to brownish-red and is found in metamorphic rocks, such as schists and gneisses, in association with micas, quartz, and feldspars
19. 50 alkali feldspars from a Variscan porphyritic granite and 27 from two country rocks of Caledonian and Variscan age respectively have been investigated for their bulk chemistries and their structural states.
20. Anorthite - rare plagioclastic feldspar occurring in many igneous rocks oligoclase, plagioclase - any of a series of triclinic feldspars that form rocks Based on WordNet 3.0, Farlex clipart collection
21. Used to describe an intergrowth of two feldspars: a host grain of potassium-rich alkali feldspar includes exsolved lamellae or irregular intergrowths of sodic alkali feldspar (near Albite, NaAlSi 3 O 8 , in composition)
22. Arkose A feldspar-rich sandstone, commonly coarse-grained and pink or reddish, that is typically composed of angular to subangular grains that may be either poorly or moderately well sorted Quartz is usually the dominant mineral, with feldspars constituting at least 25%.
23. Three types of late, subsolidus (K-Rb)-feldspars occur in the spodumene-subtype, complex-type, pollucite-bearing Rubellite rare-element pegmatite at Lilypad Lakes, near Fort Hope in northwestern Ontario: (1) Exsolution followed by hydrothermal reconstitution generated diffuse bands, patches and veinlets of Rb-enriched (< 43 mol. % Rbf) and Rb-depleted triclinic K-feldspar in black blocky microcline; (2) metasomatism of pollucite produced aggregates of adularia which range from 14 to 73 mol. % Rbf, rimmed by pure 100 mol. % Kfs feldspar, and are most likely highly disordered; (3) blocky K-feldspar was replaced by salmon-coloured, fine-grained, Na-poor and Rb-free maximum microcline with a composition close to 100 mol.