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Barite from both Hartsel and Stoneham can be cleaned in hydrochloric acid, as it will loosen the clay and iron present on these specimens. 重晶石，由雙方hartsel和斯通漢姆可以清理鹽酸，因爲(wèi)這將是放松粘土和鉄目前對(duì)這些標(biāo)本。