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Pyrite

Also Known As Fool's Gold
Sulfide Minerals

An iron sulfide mineral whose brassy, metallic luster has led prospectors to mistake it for gold for centuries, hence its common nickname. Unlike gold it is brittle and far harder. This description is adapted from Wikipedia contributors under CC BY-SA 4.0; changes were made. https://creativecommons.org/licenses/by-sa/4.0/

Facts
Classification
Crystal System
Cubic (Isometric) 1
Classification
Sulfide Mineral 2
Use
Industrial and Abrasive 3
Wikipedia 'Pyrite' states this use (or use-bearing statement); earth5 pass.
Kind
Mineral 2
Formation Class
Sulfide mineral 2
Chemical Formula
FeS2, iron disulfide 2
Hardness (Mohs)
6.5 2
Connections

Associated With

Norite, Materials

Norite intrusions such as Sudbury and the Bushveld Complex are classic hosts of magmatic sulfide mineralization including pyrite.

Shale, Materials

Pyrite forms in shale during early diagenesis of anoxic mud; cited via shale's own registered source since Pyrite carries only the generic mineral-wikipedia stub as its own source.

Source Shale (Wikipedia)
Slate, Materials

Pyrite named as an important accessory mineral of slate; cited via slate's own registered source since Pyrite carries only the generic mineral-wikipedia stub as its own source.

Source Slate (Wikipedia)

Classified As

Sulfide Minerals, Subcategories

Crystallizes In System

Cubic Crystal System, Concepts

In Discipline

Mineralogy, Disciplines
Source Mineral (Wikipedia)
Sources
1. Pyrite (Wikipedia)
Infobox: system
Quote, Infobox: system
Cubic
View the Source
2. Mineral (Wikipedia)
Wikimedia FoundationLead section
Quote, Lead section
For example, pyrite and marcasite, both iron sulfides, have the formula FeS2; however, the former is isometric while the latter is orthorhombic.
View the Source
3. Wikidata: Pyrite
Wikidata Q50769
Shale (Wikipedia)
Wikimedia FoundationAssociated With: Shale, Formation section
Quote, Associated With: Shale, Formation section
Pyrite may be formed in anoxic mud at this stage of diagenesis.
View the Source
Slate (Wikipedia)
Wikimedia FoundationAssociated With: Slate, Composition section
Quote, Associated With: Slate, Composition section
The most important accessory minerals are iron oxides (such as hematite and magnetite), iron sulfides (such as pyrite), and carbonate minerals.
View the Source
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