mineral
Pyrite in Matrix
Iron Sulfide (FeS2)
AI-generated identification · may be incorrectHardness: 6-6.5; Color: Brass-yellow (Pyrite), dark gray/black (Matrix); Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 4.9-5.2
- Hardness
- 6-6
- Color
- Brass-yellow (Pyrite), dark gray/black (Matrix)
- Luster
- Metallic
Identified More mineral →
Explore Pyrite in Matrix in the encyclopedia →Identify your own rocks.
Get a report just like this from any photo, free.
Physical properties
Hardness: 6-6.5; Color: Brass-yellow (Pyrite), dark gray/black (Matrix); Luster: Metallic; Crystal Structure: Isometric; Cleavage: Indistinct; Specific Gravity: 4.9-5.2
Formation & geological history
Formed in high and low temperature hydrothermal veins, by magmatic segregation, or as an accessory mineral in igneous and sedimentary rocks. Often found in association with quartz and sulfide minerals.
Uses & applications
Major ore for sulfur and sulfuric acid production; historically used in ignition for firearms; ornamental use in inexpensive jewelry (often called 'marcasite'); popular collector specimens.
Geological facts
Commonly known as 'Fool's Gold' because its color and weight lead inexperienced prospectors to believe they have found gold. It is the most common sulfide mineral.
Field identification & locations
Identify in the field by its brassy color, cubic crystal habit, and greenish-black streak when rubbed on a porcelain plate. Common in Peru, Spain, Italy, and the USA.
