Description

Marcasite CAS NO 1317-66-4 is a naturally occurring iron sulfide mineral, chemically identical to pyrite but crystallizing in an orthorhombic system. This compound is valued for its unique crystalline structure and properties, which differentiate it from the more common cubic pyrite. It serves as a critical raw material and reference standard in several industrial and research sectors. Key industries that utilize this material include geological research, metallurgy, and the production of specialized catalysts and pigments.

Application

• Geological & Mineralogical Research: Used as a standard specimen for studying sulfide mineralogy, crystal habits, and formation conditions.
• Metallurgical Processes: Acts as a source of iron and sulfur in certain smelting and refining operations.
• Catalyst Precursor: Serves as a starting material in the synthesis of catalysts for chemical reactions, including hydrodesulfurization.
• Pigment & Colorant Industry: Processed for use in producing stable, inorganic pigments and coatings.
• Academic Reference: Essential for educational purposes in geology and chemistry laboratories for identification and analysis.
• Jewelry & Ornamental Stone: Occasionally cut and polished for use in niche jewelry, though it is less stable than pyrite for this application.

Basic Information

Product Name	Marcasite
CAS No.	1317-66-4
Molecular Formula	FeS₂
Molecular Weight	119.98 g/mol
Synonyms	Iron disulfide (orthorhombic); White iron pyrite; Radiated pyrite; Cockscomb pyrite; Spear pyrite; Hepatic pyrite; Orthorhombic iron sulfide
EINECS	215-268-6

Quality Control

Our Marcasite is sourced and processed to meet high standards of purity and consistency. Quality is assured through a battery of analytical techniques including X-ray diffraction (XRD) for phase identification and spectroscopic methods for elemental confirmation. We provide comprehensive Certificates of Analysis (COA) with each batch, detailing key parameters such as mineralogical phase purity and elemental composition. For research-grade material, specifications regarding crystal habit and particle size distribution are available.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Although stable under normal conditions, prolonged exposure to high humidity should be avoided. Keep away from strong acids and strong oxidizing agents.

Specification

Item	Specification
Appearance	Pale bronze-yellow to white crystalline solid
Identification (XRD)	Complies (Orthorhombic phase, Pnnm)
Phase Purity (by XRD)	≥ 95% Marcasite
Assay (FeS₂)	≥ 98.0%
Iron (Fe) Content	46.0 - 47.0 %
Sulfur (S) Content	53.0 - 54.0 %
Loss on Drying	≤ 0.5 %
Particle Size (Typical)	Contact for details

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.