Buy Barite and Bentonite 11 Apr, 2014. I need a barite quote for 8,000 metric tons per month 200 mesh and raw ore (API 13A specific gravity ) to be delivered for 3 seperate loions (each a 8,000 ton quote): Laredo, Texas Corpus Christie, Texas and Midland, Texas I need the following information as well Where is the barite mined from? What are the payment terms for a 12 month contract?