SHANGHAI, Mar 22 (SMM) - The prices of gadolinium oxide continued to decline from 302,000- 308,000 yuan/mt to 268,000-274,000 yuan/mt last week, a drop of about 11%. The decline of high-purity gadolinium oxide was relatively smaller with its mainstream market prices dropping to 305,000-315,000 yuan/mt, a drop of about 6%. The transaction prices of gadolinium iron decreased to 252,000-260,000 yuan/mt, down 12.5% on a weekly basis.