It forms a continuous solid solution series with epidote by substitution of iron ( III ) in the aluminium ( m3 site ) and is also called " aluminium epidote ".
42.
It forms a continuous solid solution series with epidote by substitution of iron ( III ) in the aluminium ( m3 site ) and is also called " aluminium epidote ".
43.
Though occasionally we may find larger grains of feldspar, quartz or epidote, it is more characteristic of these rocks that all the minerals are in small, nearly uniform, imperfectly shaped individuals.
44.
Between, the lower part of the North Col Formation consists of biotite-quartz schist intercalated with epidote-quartz schist, biotite-calcite-quartz schist, and thin layers of quartzose marble.
45.
Saussurite is not however recognized as a true mineral because it is a microscopic mixture of several other minerals, zoisite, epidote, sericite, albite or other sodium rich feldspar along with possibly scapolite.
46.
Dollaseite-( Ce ), although not very well known is part of a broad group of minerals, the epidote group which are primarily silicates, the most abundant type of minerals on earth.
47.
Alteration is a mixture of sodic-calcic ( albite-epidote ) to potassic ( K-feldspar ) in style, and may vary from province to province based on host rocks and mineralising processes.
48.
A microscopic examination of the samples of feldspar intrusions in granite of the Cape have indicated that the large crystals of orthoclase feldspar have principal minerals of quartz, orthoclase, microcline, albite, epidote, and biotite.
49.
About a mile beyond Gilman Lake, you come upon the first of the two Hoover Lakes ( 9, 800 feet ), twin jewels in talus fields at the southeast foot of crumbling 10, 964-foot Epidote Peak.
50.
The action of metamorphism on the border between granite and gneiss bodies produces a succession of metamorphosed volcanic and sedimentary rocks called greenstone belts . the green color comes from minerals, such as chlorite, epidote and actinolite that formed during metamorphism.
