most of jade resources in shimian area belong to medium and low grade jade material on the basis of qualitycolor and figurethe jade may be divided into ivory jadeopal jadepink jadegreen jade and jasper from geological settingoccurrence of orebody and structure and texture of ore it is concluded that the jade deposits are contact metamorphic and dynamometamorphic one

石棉地区玉资源多属中低品位玉料，从质、色、形上可分为象牙玉、碧玉、碧玉、绿玉和碧玉，从矿体的地质背景、产状及矿石的结构和质地上可推断为接触变质和动变质

以上为机器翻译结果，长、整句建议使用 人工翻译 。