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feldspar
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Egypt
Personne àcontacter Mr. mohamed
cairo, cairo, cairo
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Feldspar group
potassium feldspar- Sodium feldspar-sodium potassium feldspar
General potassium feldspar
Orthoclase (endmember formula KAlSi3O8) is an important
tectosilicate mineral which forms igneous rock
It is the most abundant minerals about *0 % of the distribution
minerals in the earth crust in rocks from acidic to ultra basic
rocks , occur as pegmatite veins ,cutting through the basement
intrusive and volcanic rocks. the most important one is pegmatite
.
Feldspar minerals are sodium, potassium, and calcium
aluminosilicates. Their ores are commonly associated with quartz
and mica, kaolin, garnet, or iron minerals depending upon the
type of deposit . also there is wadi feldspar
The exploration by open cast way and the ore collected manually
.
Orthoclase is a common constituent of most granites and other
felsic igneous rocks and often forms huge crystals and masses in
pegmatite.
Typically, the pure potassium endmember of orthoclase forms a
solid solution with albite, the sodium endmember (NaAlSi3O8), of
plagioclase. While slowly cooling within the earth, sodium-rich
albite lamellae form by exsolution, enriching the remaining
orthoclase with potassium. The resulting intergrowth of the two
feldspars is called perthite. also there is wadi feldspar
General Sodium feldspar
It is one of the most abundant minerals in the earth crust
in rocks from acidic to ultra basic rocks , occur as pegmatite
veins ,cutting through the basement intrusive and volcanic rocks.
the most important one is pegmatite .
Feldspar minerals are sodium, potassium, and calcium
aluminosilicates. Their ores are commonly associated with quartz
and mica, kaolin, garnet, or iron minerals depending upon the
type of deposit .
The exploration by open cast way and the ore collected manually .
General potassium feldspar
Category Silicate mineral
Chemical formula
KAlSi3O8
Identification
Color Colorless, Greenish, Grayish yellow, White, Pink
Crystal habit
anhedral or euhedral.
Crystal system
Monoclinic
Twinning
Typically displays carlsbad twinning.
Cleavage
Has perfect cleavage on {**1} and good cleavage on {**0}.
Cleavages intersect at *0°.
Mohs scale hardness 6
Luster
Vitreous, pearly on cleavage surfaces
Streak
white
Diaphaneity
Transparent to translucent
Specific gravity
2.*5–2.*3
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Dispersion
relatively strong
Extinction parallel to cleavage
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General Sodium feldspar
Category plagioclase, feldspar,
Chemical formula
NaAlSi3O8
Crystal symmetry
Triclinic
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Identification
Color White to gray, bluish, greenish, reddish; may be
chatoyant
Crystal habit
tabular, divergent aggregates, granular, cleavable massive
Crystal system
Triclinic
Twinning
polysynthetic striae on {**1} or {**0}also contact, simple and
multiple
Cleavage
Perfect on {**1}, very good on {**0}, imperfect on {**0}
Fracture
Uneven to conchoidal
Tenacity Brittle
Mohs scale hardness 6 – 6.5
Luster
Vitreous, typically pearly on cleavages
Streak
White
Diaphaneity
Transparent to translucent
Specific gravity
2.*0 - 2.*5
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Other characteristics Low- and high-temperature structural
modifications are recognized
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| Pays: | Egypt |
| N ° de modèle: | feldspar |
| Prix FOB: | ( Negotiable ) Obtenir le dernier prix |
| Localité: | - |
| Prix de commande minimale: | - |
| Commande minimale: | - |
| Packaging Detail: | - |
| Heure de livraison: | - |
| Capacité de Fournir: | - |
| Payment Type: | T/T, D/P, PayPal, Other |
| Groupe de produits : | - |
