The Jiama deposit,a significant porphyry-skarn-type copper polymetallic deposit located within the Gangdese metallogenic belt in Tibet,China,exemplifies a typical porphyry metallogenic system.However,the mineral chemi...The Jiama deposit,a significant porphyry-skarn-type copper polymetallic deposit located within the Gangdese metallogenic belt in Tibet,China,exemplifies a typical porphyry metallogenic system.However,the mineral chemistry of its accessory minerals remains under-examined,posing challenges for resource assessment and ore prospecting.Utilizing electron microprobe analysis and LA-ICP-MS analysis,this study investigated the geochemical characteristics of apatite in ore-bearing granite and monzogranite porphyries,as well as granodiorite,quartz diorite,and dark diorite porphyries in the deposit.It also delved into the diagenetic and metallogenic information from these geochemical signatures.Key findings include:(1)The SiO_(2) content,rare earth element(REE)contents,and REE partition coefficients of apatite indicate that the dark diorite porphyry possibly does not share a cogenetic magma source with the other four types of porphyries;(2)the volatile F and Cl contents in apatite,along with their ratio,indicate the Jiama deposit,formed in a collisional setting,demonstrates lower Cl/F ratios in apatite than the same type of deposits formed in a subduction environment;(3)compared to non-ore-bearing rock bodies in other deposits formed in a collisional setting,apatite in the Jiama deposit exhibits lower Ce and Ga contents.This might indicate that rock bodies in the Jiama deposit have higher oxygen fugacity.Nevertheless,the marginal variation in oxygen fugacity between ore-bearing and non-ore-bearing rock bodies within the deposit suggests oxygen fugacity may not serve as the decisive factor in the ore-hosting potential of rock bodies in the Jiama deposit.展开更多
为开发和鉴定鸭品种特异性分子标记,试验选取樱桃谷鸭、北京鸭、枫叶鸭、金定鸭、绍兴鸭、山麻鸭、高邮鸭7个群体共56只鸭通过Illumina Hi Seq 2500平台进行了重测序,筛选出686个存在于特定群体中的单核苷酸多态性突变(SNP)和插入缺失标...为开发和鉴定鸭品种特异性分子标记,试验选取樱桃谷鸭、北京鸭、枫叶鸭、金定鸭、绍兴鸭、山麻鸭、高邮鸭7个群体共56只鸭通过Illumina Hi Seq 2500平台进行了重测序,筛选出686个存在于特定群体中的单核苷酸多态性突变(SNP)和插入缺失标记(INDEL),并随机选取了7个SNP位点进行PCR验证,结果完全符合预期,说明通过二代测序筛选出的特异性SNP可以作为鸭品种鉴定的分子标记。展开更多
基金supported by the National Key Research and Development Program of China(Grant No.2022YFC2905001)the National Natural Science Foundation of China(Grant Nos.42272093,42230813)a geological survey project(Grant No.DD20230054).
文摘The Jiama deposit,a significant porphyry-skarn-type copper polymetallic deposit located within the Gangdese metallogenic belt in Tibet,China,exemplifies a typical porphyry metallogenic system.However,the mineral chemistry of its accessory minerals remains under-examined,posing challenges for resource assessment and ore prospecting.Utilizing electron microprobe analysis and LA-ICP-MS analysis,this study investigated the geochemical characteristics of apatite in ore-bearing granite and monzogranite porphyries,as well as granodiorite,quartz diorite,and dark diorite porphyries in the deposit.It also delved into the diagenetic and metallogenic information from these geochemical signatures.Key findings include:(1)The SiO_(2) content,rare earth element(REE)contents,and REE partition coefficients of apatite indicate that the dark diorite porphyry possibly does not share a cogenetic magma source with the other four types of porphyries;(2)the volatile F and Cl contents in apatite,along with their ratio,indicate the Jiama deposit,formed in a collisional setting,demonstrates lower Cl/F ratios in apatite than the same type of deposits formed in a subduction environment;(3)compared to non-ore-bearing rock bodies in other deposits formed in a collisional setting,apatite in the Jiama deposit exhibits lower Ce and Ga contents.This might indicate that rock bodies in the Jiama deposit have higher oxygen fugacity.Nevertheless,the marginal variation in oxygen fugacity between ore-bearing and non-ore-bearing rock bodies within the deposit suggests oxygen fugacity may not serve as the decisive factor in the ore-hosting potential of rock bodies in the Jiama deposit.
文摘为开发和鉴定鸭品种特异性分子标记,试验选取樱桃谷鸭、北京鸭、枫叶鸭、金定鸭、绍兴鸭、山麻鸭、高邮鸭7个群体共56只鸭通过Illumina Hi Seq 2500平台进行了重测序,筛选出686个存在于特定群体中的单核苷酸多态性突变(SNP)和插入缺失标记(INDEL),并随机选取了7个SNP位点进行PCR验证,结果完全符合预期,说明通过二代测序筛选出的特异性SNP可以作为鸭品种鉴定的分子标记。
