Dear sir, This is Tony from Guizhou Pingruihe Minerals Co.,Ltd. I am very honour to contact with you and maybe we have a chance to cooperate. Our company is main export the white barite lump long time. Our details of mines and specifications be present as follows: 1. Super white barite in lump Spec: BASO4 97%min; Whiteness 94%min; Size 1-150mm 90%min Output: 7,000-9,000mts annually Packing: In 50kgs P.P bags/ 1mts P.P bags. 2. Off-white barite in lump(treated by acid) Spec: BASO4 95%min; Whiteness 80%min; Size 1-200mm 90%min Output: 30,000mts annually 3. White barite in lump(treated by acid) Spec: BASO4 96%min; Whiteness 90%min; Size 1-200mm 90%min. Output: 50,000mts annually We have store over 10,000mts white barite rock at Fangchen port of China now, if you have any questions for above mentioned, please contact me without hesitate. Thanks Tony Guizhou Pingruihe Minerals Co.,Ltd Add:3/3 ENTRANCE 4, DONGFANG XINYUAN GARDEN,MINSHENG ROAD, GUIYANG, 550001, GUIZHOU, CHINA