हार्ड क्रिस्टलीय खनिजों का कोई भी समूह जिसमें पोटेशियम या सोडियम या कैल्शियम या बेरियम के एल्यूमीनियम सिलिकेट होते हैं

Noun:

एक धातु विशेष,

felspar शब्द के हिंदी अर्थ का उदाहरण:

জজজनीस चहट्टने घटक खनीजो के अलगाव के कारण बनी परटो से उत्पन्न होती है|यह मुख्त्य क्वॉर्ट्ज़ व फेल्डस्पार खनिज से बनी होती है|।

ग्रेनाइट एक फेल्सिक चट्टान है, जिसका अर्थ है कि यह पोटेशियम फेल्डस्पार और क्वार्ट्ज में समृद्ध है।

felspar's Usage Examples:

The larger ones polarize light, have angular outlines like those of crystals, and may even show twinning and definite optical properties by which they can be identified as belonging to felspar, augite or some other rock-forming mineral.

These crystals have, as a rule, very good crystalline form, but the quartz and felspar are often filled with enclosures of glass.

Few obsidians are entirely vitreous; usually they have small crystals of felspar, quartz, biotite or iron oxides, and when these are numerous the rock is called a porphyritic obsidian (or hyalo-liparite).

Babingtonite is found as small black crystals on felspar in the granite of Baveno in Italy, and in the Haytor iron mine in Devonshire.

They are mostly true felspar basalts, but a few contain nepheline in addition to the felspar.

Some of the "porphyroids" which have grains of quartz and felspar in a finely schistose micaceous matrix are intermediate between porphyries and micaschists of this group. Still more numerous are orthoschists of hornblendic character (hornblende-schists) consisting of green hornblende with often felspar, quartz and sphene (also rutile, garnet, epidote or zoisite, biotite and iron oxides).

Often they contain quartz and felspar, sometimes pyroxene, amphibole, garnet or epidote.

In the mica-schists of this group biotite or muscovite may be the principal mineral and often both are present in varying proportions; the mica has developed from the argillaceous matter of the original rock; in addition there is always quartz and sometimes felspar (albite or oligoclase).

The difference between schists and gneisses is mainly that the latter have less highly developed foliation; they also, as a rule, are more coarse grained, and contain far more quartz and felspar, two minerals which rarely assume platy or acicular forms, and hence do not lead to the production of a fissile character in the rocks in which they are important constituents.

Throughout much of the Piedmont Plateau and Mountain regions the decomposition of felspar and of other aluminous minerals has resulted in a deep soil of clay with which more or less sand is mixed.

felspar's Meaning':

any of a group of hard crystalline minerals that consist of aluminum silicates of potassium or sodium or calcium or barium