{"id": 984614, "name": "unit value|Nickel|Mine|constant 1998 US$ per tonne", "unit": "constant 1998 US$ per tonne", "createdAt": "2024-08-14T13:28:43.000Z", "updatedAt": "2025-07-23T16:42:27.000Z", "coverage": "", "timespan": "1900-2020", "datasetId": 6653, "shortUnit": "$/t", "columnOrder": 0, "shortName": "unit_value_nickel_mine_constant_1998_usd_per_tonne", "catalogPath": "grapher/minerals/2024-07-15/minerals/minerals#unit_value_nickel_mine_constant_1998_usd_per_tonne", "descriptionShort": "Value of 1 tonne of nickel, in constant 1998 US$ per tonne.", "descriptionFromProducer": "Notes found in original USGS historical data:\n- The Consumer Price Index conversion factor, with 1998 as the base year, is used to adjust unit value in current U.S. dollars to the unit value in constant 1998 U.S. dollars.", "descriptionProcessing": "- The majority of the data is sourced from USGS, supplemented by BGS data where available. Where both overlap, USGS data is prioritized.\n- As BGS does not provide global data, we calculated the world total by summing the data from individual countries, using this as a cross-check against USGS global figures.\n- Due to the inherent uncertainties in the data for certain minerals and countries, we allowed a maximum deviation of 10% between the global totals reported by USGS and the calculated ones for BGS. If the deviation exceeded this threshold, we excluded the BGS data.\n- The calculated global total from BGS data was used only on exceptional occasions, after ensuring that the resulting aggregate was sufficiently complete.\n- Both BGS and USGS datasets include numerous notes and footnotes. We have retained most of these, making only minor edits or deletions where necessary to maintain clarity.", "type": "int", "grapherConfigIdETL": "0191c16a-926f-70d6-b393-8531b8f046ee", "dataChecksum": "3384626181961363790", "metadataChecksum": "-5026691264756159304", "datasetName": "Minerals", "updatePeriodDays": 365, "datasetVersion": "2024-07-15", "nonRedistributable": false, "display": {"name": "Nickel", "unit": "constant 1998 US$ per tonne", "shortUnit": "$"}, "schemaVersion": 2, "processingLevel": "major", "presentation": {"titlePublic": "Nickel unit value", "topicTagsLinks": ["Metals & Minerals"]}, "descriptionKey": ["Unit value represents the price of a physical unit of apparent consumption (such as a metric ton) in dollars. Apparent consumption itself is determined by the formula: Apparent Consumption = Production + Imports - Exports \u00b1 (Stock Change).", "For commodities that exist in a single physical form, like copper, a straightforward price series can estimate the unit value.", "However, for commodities like chromium, which encompass multiple forms (e.g., metal, ferroalloys, ore), weighted averages are used, with each form's price weighted by its contribution to total consumption.", "When no direct price series is available, unit values are derived using export, import, and production data.", "To ensure consistency over time, these values are reported in 1998 constant dollars, adjusted for inflation."], "dimensions": {"years": {"values": [{"id": 1900}, {"id": 1901}, {"id": 1902}, {"id": 1903}, {"id": 1904}, {"id": 1905}, {"id": 1906}, {"id": 1907}, {"id": 1908}, {"id": 1909}, {"id": 1910}, {"id": 1911}, {"id": 1912}, {"id": 1913}, {"id": 1914}, {"id": 1915}, {"id": 1916}, {"id": 1917}, {"id": 1918}, {"id": 1919}, {"id": 1920}, {"id": 1921}, {"id": 1922}, {"id": 1923}, {"id": 1924}, {"id": 1925}, {"id": 1926}, {"id": 1927}, {"id": 1928}, {"id": 1929}, {"id": 1930}, {"id": 1931}, {"id": 1932}, {"id": 1933}, {"id": 1934}, {"id": 1935}, {"id": 1936}, {"id": 1937}, {"id": 1938}, {"id": 1939}, {"id": 1940}, {"id": 1941}, {"id": 1942}, {"id": 1943}, {"id": 1944}, {"id": 1945}, {"id": 1946}, {"id": 1947}, {"id": 1948}, {"id": 1949}, {"id": 1950}, {"id": 1951}, {"id": 1952}, {"id": 1953}, {"id": 1954}, {"id": 1955}, {"id": 1956}, {"id": 1957}, {"id": 1958}, {"id": 1959}, {"id": 1960}, {"id": 1961}, {"id": 1962}, {"id": 1963}, {"id": 1964}, {"id": 1965}, {"id": 1966}, {"id": 1967}, {"id": 1968}, {"id": 1969}, {"id": 1970}, {"id": 1971}, {"id": 1972}, {"id": 1973}, {"id": 1974}, {"id": 1975}, {"id": 1976}, {"id": 1977}, {"id": 1978}, {"id": 1979}, {"id": 1980}, {"id": 1981}, {"id": 1982}, {"id": 1983}, {"id": 1984}, {"id": 1985}, {"id": 1986}, {"id": 1987}, {"id": 1988}, {"id": 1989}, {"id": 1990}, {"id": 1991}, {"id": 1992}, {"id": 1993}, {"id": 1994}, {"id": 1995}, {"id": 1996}, {"id": 1997}, {"id": 1998}, {"id": 1999}, {"id": 2000}, {"id": 2001}, {"id": 2002}, {"id": 2003}, {"id": 2004}, {"id": 2005}, {"id": 2006}, {"id": 2007}, {"id": 2008}, {"id": 2009}, {"id": 2010}, {"id": 2011}, {"id": 2012}, {"id": 2013}, {"id": 2014}, {"id": 2015}, {"id": 2016}, {"id": 2017}, {"id": 2018}, {"id": 2019}, {"id": 2020}]}, "entities": {"values": [{"id": 355, "name": "World", "code": "OWID_WRL"}]}}, "origins": [{"id": 1264, "title": "Historical Statistics for Mineral and Material Commodities", "description": "Information on mineral commodities, including production and unit value (the real and nominal price in U.S. dollars of a metric ton of apparent consumption). For many of the commodities, data are reported as far back as 1900.\nThe data was compiled primarily from publications of the United States Geological Survey (USGS) and the U.S. Bureau of Mines (USBM). The principal references are the annual Minerals Yearbook (MYB) publication and its predecessor, Mineral Resources of the United States (MR). Other USGS and USBM publications used as references included: Statistical Compendium (SC), Metal Prices in the United States Through 1991 (MP91), Metal Prices in the United States Through 1998 (MP98), Metal Prices in the United States Through 2010, MCS and its predecessor Commodity Data Summaries (CDS), Minerals Facts and Problems (MFP), and various USBM Information Circulars. In some cases, USGS mineral commodity specialists added previously unpublished or recently revised data to the historical statistics series.", "producer": "United States Geological Survey", "citationFull": "Kelly, T.D., and Matos, G.R., comps., 2014, Historical statistics for mineral and material commodities in the United States (2016 version): U.S. Geological Survey Data Series 140.", "attribution": "USGS - Historical Statistics for Mineral and Material Commodities (2023)", "attributionShort": "USGS", "urlMain": "https://www.usgs.gov/centers/national-minerals-information-center/historical-statistics-mineral-and-material-commodities", "dateAccessed": "2024-07-15", "datePublished": "2023", "license": {"url": "https://www.usgs.gov/centers/national-minerals-information-center/historical-statistics-mineral-and-material-commodities", "name": "Public domain"}}]}