Mineralogical and Chemical Data for Heavy-Mineral Concentrate Samples Collected in the Taylor Mountains Quadrangle, Alaska, 2004-2008

Data for 819 pan concentrated stream-sediment samples, nonmagnetic heavy-mineral concentrate (HMC) samples, and chemical data for 93 of HMC samples. The samples were collected in 2004-2008 as part of a reconnaissance geochemical geological survey of drainage basins mostly in the Taylor Mountains 1:250,000-scale quadrangle in southwestern Alaska. Samples were collected from first- or second-order streams, as shown on USGS 1:63,360-scale maps. The data reported here are from hand lens inspection of the panned concentrate samples in the field, microscopic examination of the non-magnetic fraction of the HMC samples in the lab, and chemical analyses by Inductively Coupled Plasma-Atomic Emission Spectrometry-Mass Spectrometry (ICP-AES-MS) of selected nonmagnetic HMC samples.

本次数据集包含819件经淘洗富集的河流沉积物样品、非磁性重矿物精矿（HMC）样品，以及其中93件HMC样品的化学分析数据。样品采集于2004至2008年间，系美国阿拉斯加州西南部泰勒山脉1:25万比例尺图幅内流域地球化学地质踏勘调查项目的一部分，调查范围主要覆盖该图幅区域。样品采集自美国地质调查局（USGS）1:63360比例尺地形图所标注的一级或二级溪流。本次发布的数据来源于三部分：一是野外对淘洗富集样品开展的放大镜镜检，二是实验室对HMC样品非磁性组分进行的显微鉴定，三是对选取的非磁性HMC样品采用电感耦合等离子体原子发射光谱-质谱联用法（Inductively Coupled Plasma-Atomic Emission Spectrometry-Mass Spectrometry，ICP-AES-MS）完成的化学分析。