Silicon Element, Ferrous Metals and Many Other Minerals in All Forms

Marietta Minerals Processing processes and delivers ultra high purity, chemical and metallurgical grades of silicon metal, including silicon element, ferrous metals and more. With a multitude of processing options available, customers can order sizes ranging from cast by down (i.e., as it arrives bulk) to single-digit micron powders. Our expertise in various milling and screening processes gives our customers the option of specifying the purity they want purity and naming top size and bottom size in inches, fractions of inches, mesh or microns. With the ability to provide 99.99% pure N-type or P-type silicon, as well as customized drying and blending services, we deliver exactly the product you need in quantities ranging from hundreds of pounds to truckloads. Our various storage, packaging and shipping options mean we can deliver what you need, where and when you need it.

For more information on the services we offer, click here to visit our Services page, or contact Clinton Holley by e-mail at sales@mariettaminerals.com or by telephone at 740-373-5022.

High Purity > 99.99% pure silicon can be either “N” type or “P” type.
	Min	Max	Typical	Concentration
Si	99.99%			ppmwt
Fe			<0.05ppm	ppmwt
Al			<0.01ppm	ppmwt
Ca			<0.05ppm	ppmwt
Cu			<0.05ppm	ppmwt
Cr			<0.05ppm	ppmwt
Ni			<0.01ppm	ppmwt
Mn			<0.05ppm	ppmwt
O			<0.05ppm	ppmwt

Chemical Grade
	Min	Max	Typical
Si	>98.0%		>99.0%
Fe		0.35%
Al
Ca		0.03%	0.026%

Metallurgical Grade
	Min	Max	Typical
Si	98.00%		>98.5%
Fe		1.00%	<0.65%
Al		0.25%	0.18%
Ca		0.30%	0.10%

Glossary
Bottom Size	This is the size of the smallest particle in your order, usually measured in inches, fractions of inches, mesh or microns.
Cast by Down	This is the size of the as cast silicon as it arrives in bulk.
Mesh Size	This is a number corresponding to the number of openings in one square inch of screen. Higher mesh numbers equate to smaller holes.
Micron	Also known as a micrometer, one micron is the same as one millionth of a meter or 0.000039 inches.
Top Size	This is the size of the largest particle in your order, usually measured in inches, fractions of inches, mesh or microns.