Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater

Frequently anticipated questions:

• What does this data set describe?
  1. How might this data set be cited?
  2. What geographic area does the data set cover?
  3. What does it look like?
  4. Does the data set describe conditions during a particular time period?
  5. What is the general form of this data set?
  6. How does the data set represent geographic features?
  7. How does the data set describe geographic features?
• Who produced the data set?
  1. Who are the originators of the data set?
  2. Who also contributed to the data set?
  3. To whom should users address questions about the data?
• Why was the data set created?
• How was the data set created?
  1. From what previous works were the data drawn?
  2. How were the data generated, processed, and modified?
  3. What similar or related data should the user be aware of?
• How reliable are the data; what problems remain in the data set?
  1. How well have the observations been checked?
  2. How accurate are the geographic locations?
  3. How accurate are the heights or depths?
  4. Where are the gaps in the data? What is missing?
  5. How consistent are the relationships among the data, including topology?
• How can someone get a copy of the data set?
  1. Are there legal restrictions on access or use of the data?
  2. Who distributes the data?
  3. What's the catalog number I need to order this data set?
  4. What legal disclaimers am I supposed to read?
  5. How can I download or order the data?
• Who wrote the metadata?

What does this data set describe?

1. How might this data set be cited?
   Gartman, Amy, Whisman, Samantha P., and Hein, James R., 20201103, Measurements of zinc, oxygen, and pH, from sphalerite and ZnS oxidation in seawater: data release DOI:10.5066/P9FZ16VG, U.S. Geological Survey, Pacific Coastal and Marine Science Center, Santa Cruz, California.

   Online Links:

   • https://doi.org/10.5066/P9FZ16VG
   • https://www.sciencebase.gov/catalog/item/5f86121e82cebef40f14c726

2. What geographic area does the data set cover?

   West_Bounding_Coordinate: -180
   East_Bounding_Coordinate: 180
   North_Bounding_Coordinate: 90
   South_Bounding_Coordinate: -90
   

3. What does it look like?
4. Does the data set describe conditions during a particular time period?

   Beginning_Date: 01-Jan-2016

   Ending_Date: 15-Aug-2020

   Currentness_Reference:

   ground condition at time data were collected

5. What is the general form of this data set?

   Geospatial_Data_Presentation_Form: comma-delimited text
   

6. How does the data set represent geographic features?
   1. How are geographic features stored in the data set?
      
   2. What coordinate system is used to represent geographic features?
      
7. How does the data set describe geographic features?

   Attribute table

   Table containing attribute information associated with the dataset (Source: Producer defined)

   Trial

   Number of trial (Source: producer defined) trials sequentially numbered

   Zn_added

   concentration of zinc added at the beginning of each trial (Source: Producer defined)

   Range of values
   Minimum:	2.05 x 10^-4
   Maximum:	7.45 x 10^-3
   Units:	moles per liter

   Condition

   Description of conditions under which experiment was conducted (Source: producer defined) specific to each trial; see details in Gartman and others (2020)

   Temperature

   temperature at which experiment was conducted (Source: producer defined)

   Range of values
   Minimum:	22
   Maximum:	62
   Units:	degrees Celsius

   Time

   time elapsed from onset of experiment to time of measurement (Source: producer defined)

   Range of values
   Minimum:	0
   Maximum:	123.75
   Units:	days

   Zn_measured

   concentration of zinc measured; -9999 indicates no data, -8888 indicates the value was below the detection limit (Source: producer defined)

   Range of values
   Minimum:	1.47 x 10^-7
   Maximum:	1.24 x 10^-4
   Units:	moles per liter

   pH

   pH of the solution; -9999 indicates no data (Source: producer defined)

   Range of values
   Minimum:	7.26
   Maximum:	8.52
   Units:	log scale

   O2

   dissolved oxygen in the solution; -9999 indicates no data (Source: Produce defined)

   Range of values
   Minimum:	3.71 x 10^-5
   Maximum:	2.50 x 10^-4
   Units:	moles per liter

   Entity_and_Attribute_Overview: The first line of the csv file is a header line.
   Entity_and_Attribute_Detail_Citation: U.S. Geological Survey
   

Who produced the data set?

1. Who are the originators of the data set? (may include formal authors, digital compilers, and editors)
   • Amy Gartman
   • Samantha P. Whisman
   • James R. Hein
2. Who also contributed to the data set?
3. To whom should users address questions about the data?
   U.S. Geological Survey, Pacific Coastal and Marine Science Center

   Attn: PCMSC Science Data Coordinator

   2885 Mission Street

   Santa Cruz, CA
   

   831-460-7562 (voice)

   pcmsc_data@usgs.gov

Why was the data set created?

Data were used to determine the rate and process of sphalerite and ZnS oxidation in seawater, coupled to covellite.

How was the data set created?

1. From what previous works were the data drawn?
2. How were the data generated, processed, and modified?

   Date: 15-Aug-2020 (process 1 of 1)

   Results from the all lab analyses were combined into a comma-delimited text document. See accompanying manuscript for sample-processing details. Person who carried out this activity:
   

   Amy Gartman

   U.S. Geological Survey

   Research Oceanographer

   2885 Mission St

   Santa Cruz, CA
   

   831-460-7562 (voice)

   agartman@usgs.gov

3. What similar or related data should the user be aware of?
   Gartman, Amy, Whisman, Samantha P., and Hein, James R., 2020, Interactive oxidation of sphalerite and covellite in seawater: implications for seafloor massive sulfide deposits and mine waste.

   Online Links:

   • https://doi.org/10.1021/acsearthspacechem.0c00177

   Other_Citation_Details:

   Gartman, A., Whisman, S.P., and Hein, J.R., 2020, Interactive oxidation of sphalerite and covellite in seawater: implications for seafloor massive sulfide deposits and mine waste: ACS Earth and Space Chemistry, https://doi.org/10.1021/acsearthspacechem.0c00177

   Kocyla, Anna, Pomorski, Adam, and Krezel, Artur, 2017, Molar absorption coefficients and stability constants of Zincon metal complexes for determination of metal ions and bioinorganic applications.

   Online Links:

   • https://doi.org/10.1016/j.jinorgbio.2017.08.006

   Other_Citation_Details:

   Kocyla, A., Pomorski, A., and Krezel, A., 2017, Molar absorption coefficients and stability constants of Zincon metal complexes for determination of metal ions and bioinorganic applications: J. Inorg. Biochem., v. 176, p. 53-65

How reliable are the data; what problems remain in the data set?

1. How well have the observations been checked?
   Data may be considered accurate within 10 percent.
2. How accurate are the geographic locations?
   no positional information in are included in the data
3. How accurate are the heights or depths?
   
4. Where are the gaps in the data? What is missing?
   Data were included where measured.
5. How consistent are the relationships among the observations, including topology?
   Oxygen values are always below saturation. Time progresses linearly.

How can someone get a copy of the data set?

Are there legal restrictions on access or use of the data?

Access_Constraints: None
Use_Constraints:

USGS-authored or produced data and information are in the public domain from the U.S. Government and are freely redistributable with proper metadata and source attribution. Please recognize and acknowledge the U.S. Geological Survey as the originator(s) of the dataset and in products derived from these data.

1. Who distributes the data set? (Distributor 1 of 1)
   
   U.S. Geological Survey - ScienceBase

   Denver Federal Center, Building 810, Mail Stop 302

   Denver, CO
   

   1-888-275-8747 (voice)

   sciencebase@usgs.gov
2. What's the catalog number I need to order this data set? These data are available in csv format contained in a single file.
3. What legal disclaimers am I supposed to read?

   Unless otherwise stated, all data, metadata and related materials are considered to satisfy the quality standards relative to the purpose for which the data were collected. Although these data and associated metadata have been reviewed for accuracy and completeness and approved for release by the U.S. Geological Survey (USGS), no warranty expressed or implied is made regarding the display or utility of the data on any other system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty.

4. How can I download or order the data?
   • Availability in digital form:

     Data format:	csv in format comma-delimited text (version Microsoft Excel 16.16.17 for Mac) Size: 0.035
     Network links:	https://www.sciencebase.gov/catalog/file/get/5f86121e82cebef40f14c726 https://doi.org/10.5066/P9FZ16VG

   • Cost to order the data: None.

5. What hardware or software do I need in order to use the data set?

   These data can be viewed with any text reader software.

Who wrote the metadata?

Dates:

Last modified: 03-Nov-2020

Metadata author:

U.S. Geological Survey, Pacific Coastal and Marine Science Center

Attn: PCMSC Science Data Coordinator

2885 Mission Street

Santa Cruz, CA

831-427-4747 (voice)

pcmsc_data@usgs.gov

Metadata standard:

Content Standard for Digital Geospatial Metadata (FGDC-STD-001-1998)