Container Glass Application

Anthracite is combined with sulphur and iron salts to produce compounds that colour glass yellow to amber to shades of black. It is also used in the coloration of cement and the production of clear glass to reduce imperfections and improve strength and stability.

  • The addition of carbon increases the reduction potential of molten glass
  • Eliminates gaseous imperfections in glass when used with sodium sulphate
  • Improves glass-melt chemistry during coloration with chrome and manganese dioxide
  • Produces a more consistent, high-quality end product
  • Trims reduction oxidation levels in glass coloration process



  • Natural carbon content range between 79% and 81%
  • 2.75 to 3 hardness on the Mohs scale (higher than other bituminous coals)
  • 1.3 to 1.4 relative density (higher than other bituminous coals)


General Information

Anthracite is the variety of coal with the fewest impurities and the highest carbon content. It was created by the fossilization of dense green vegetation in the Carboniferous Age. African Pegmatite’s milled anthracite won’t give off a tarry hydrocarbon vapor when heated.

Data Sheets

Glass Reductant Grade

Black Oxide                                                            

Water Filtration grade                     

Solvent Extraction Grade


Packed in 25/40kg polypropylene bags stretch-wrapped on pallets or 500kg bulk bags. Choose the packaging and shipping arrangement that best suits your needs, from small packaging to bulk bags or custom sizes made just for you. We can accommodate virtually any size, from one metric ton to thousands.


We maintain competitive pricing in an effort to win and retain your business for as long as you need us. Our goal is to meet the needs of every customer, including those with special requests and demanding production schedules.

A 15-day general turnaround for manufacturing allows us to get your compounds to you as quickly as possible, so you can keep up with the demands of your business. Contact us to get in touch with a distributor in your area if you don’t have time to wait for materials.

We currently ship to 44 countries across the world and we’re happy to ship to yours, too. The dependable and professional logistics channels we have in place make it easy to offer great pricing and service regardless of your location.

African Pegmatite

With 48 years as professionals in mining and manufacturing, we have the insight, network, and experience to offer you the very best in quality, service, and efficiency. We’ve been accredited by the ISO 9001 since 2002 and have most recently met the 2015 standard.

We aim to provide the very best materials available to our customers, and become your one-stop shop for colourants, minerals, compounds, and more. Take a look at our general glass page to see all the other glass and supplementary products we have available.

If you’d like to become a distributor of African Pegmatite products, get in touch with us and we’ll customise an arrangement with you.