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Pyrrhotite - Mineral Properties and Uses

What is Pyrrhotite?

Pyrrhotite is an iron sulfide mineral found in basic igneous rocks, pegmatites, vein deposits, and contact metamorphic deposits. It is slighly magnetic.

Uses

Pyrrhotite is mined primarily because it is associated with pentlandite, sulfide mineral that can contain significant amounts of nickel and cobalt.

Color

bronze yellow, brownish bronze, reddish bronze

Streak

dark grayish black

Luster

metallic

Diaphaneity

opaque

Cleavage

none

Hardness

3.5 - 4.5

Specific Gravity

4.6 - 4.7

Distinguishing
Characteristics

color, magnetism

Crystal System

monoclinic

Chemical Classification

sulfide

Chemical Composition

iron sulfide, Fe1-xS

Pyrrhotite Pictures

pyrrhotite
Pyrrhotite from Falconbridge, Ontario, Canada.
Specimen is approximately 3 inches (7.6 centimeters) across.

pyrrhotite
Pyrrhotite from Falconbridge, Ontario, Canada.
Specimen is approximately 2-1/2 inches (6.4 centimeters) across.

pyrrhotite
Nickeliferous pyrrhotite from Falconbridge, Ontario, Canada.
Specimen is approximately 5 inches (12.7 centimeters) across.




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