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Geochemical, mineralogical, and grain-size data for in-situ solid materials and suspended sediment at Malakoff Diggins State Historic Park, Nevada County, California

May 20, 2020

This dataset includes data for in-situ solid materials and suspended sediments from surface-water samples, as well as surface-water chemistry from samples collected during storm events at Malakoff Diggins State Historic Park, Nevada County, California. In-situ solid samples were collected during 2015 along six vertical transects along the cliff walls of the mine pit. Surface-water samples were collected during 2014 and 2016 from Hiller Tunnel and from drainage networks below the in-situ sampling sites during runoff conditions. In-situ and suspended-sediment samples were analyzed for grain-size distribution, X-ray diffraction (XRD) for quantitative mineralogy, inductively coupled plasma - mass spectrometry (ICP-MS) for trace elements, and inductively coupled plasma - optical emission spectroscopy (ICP-OES) for major elements. Water samples (both filtered and non-filtered) were analyzed for trace elements including aluminum, arsenic, barium, beryllium, cadmium, chromium, copper, iron, lead, mercury, nickel, zinc, and total suspended sediment. Water-quality field measurements included water temperature, specific conductance, dissolved oxygen, pH, and oxidation-reduction potential. There are four files (*.csv) in this dataset: 1) data dictionary; 2) sediment data; 3) water data; and 4) quality assurance data.

Publication Year 2020
Title Geochemical, mineralogical, and grain-size data for in-situ solid materials and suspended sediment at Malakoff Diggins State Historic Park, Nevada County, California
DOI 10.5066/P95RLMEI
Authors Alfred J. Ward, Charles N Alpers, Kate M Campbell-Hay, Tyler J Kane, David A Roth, Terry I. Plowman, Ronald C. Antweiler, Carrie Monohan, James F Howle, James Orlando, Jennifer A Curtis
Product Type Data Release
Record Source USGS Asset Identifier Service (AIS)
USGS Organization Sacramento Projects Office (USGS California Water Science Center)
Rights This work is marked with CC0 1.0 Universal
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