(ש"ע) כלקופיריט (מינרל)

כלקופיריט (צרוף של "כלקוס"-נחושת ביוונית ופיריט) הוא מינרל סולפידי, המכיל ברזל ונחושת שנוסחתו CuFeS₂ המורכב מגבישים טטרהדריים.

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n. mineral

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Noun
1. a yellow copper ore (CuFeS2) made up of copper-iron sulfide
(synonym) copper pyrites
(hypernym) mineral
(substance-meronym) copper, Cu, atomic number 29

(n.)
Copper pyrites, or yellow copper ore; a common ore of copper, containing copper, iron, and sulphur. It occurs massive and in tetragonal crystals of a bright brass yellow color.
  

General Information:
 Chemical Formula:
CuFeS2
 Composition:
(Molecular Weight = 183.53 gm)
Iron 30.43 % Fe
Copper 34.63 % Cu
Sulfur 34.94 % S 
 Empirical Formula:
CuFe2+S2
 Environment:
Common in sulfide veins and disseminated in igneous rocks.
 Locality:
Numerous localities world wide. The most economically important mineral in porphyry copper deposits.
 Name Origin:
From the Greek, chalkos, "copper" hence "Copper Pyrite."
Physical Properties:
 Cleavage:
[112] Indistinct
 Color:
brass yellow or honey yellow.
 Density:
4.1 - 4.3, Average = 4.19
 Diaphaniety:
Opaque
 Habits:
Euhedral Crystals - Occurs as well-formed crystals showing good external form., Striated - Parallel lines on crystal surface or cleavage face., Druse - Crystal growth in a cavity whic h results in numerous crystal tipped sur
 Hardness:
3.5 - Copper Penny
 Luminescence:
None.
 Luster:
Metallic
 Streak:
greenish black
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