<?xml version="1.0" encoding="UTF-8"?><md:MetaData xmlns:md="http://www.pangaea.de/MetaData" version="2026-04-13">
<md:citation id="dataset961662">
<md:author id="dataset.author100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:author>
<md:author id="dataset.author59167">
<md:lastName>Fisk</md:lastName>
<md:firstName>Mary B</md:firstName>
</md:author>
<md:year>2023</md:year>
<md:title>Chemical analysis of manganese deposits retrieved during Manganese Nodule Program BOMDROP cruise MN75-03</md:title>
<md:type id="dataset.reftype10" includeInCitation="true">dataset</md:type>
<md:URI>https://doi.org/10.1594/PANGAEA.961662</md:URI>
<md:dateTime>2023-08-21T07:34:10</md:dateTime>
</md:citation>
<md:abstract>Manganese nodules and crusts were taken from free-fall grabs at various stations of the Manganese Nodule Program BOMDROP cruise MN75-03. They were analysed using atomic absorption spectrophotometry.</md:abstract>
<md:reference dataciteRelType="References" group="210" id="ref119325" relationType="Related to" relationTypeId="12">
<md:author id="ref119325.author100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:author>
<md:year>1981</md:year>
<md:title>Studies of the mineralogy, chemical composition, textures and distribution of manganese nodules at a site in the north equatorial Pacific Ocean</md:title>
<md:type id="ref119325.reftype12" includeInCitation="true">dissertation</md:type>
<md:source>Harvard University</md:source>
<md:URI>https://id.lib.harvard.edu/alma/990009796760203941/catalog</md:URI>
</md:reference>
<md:reference dataciteRelType="References" group="210" id="ref119685" relationType="Related to" relationTypeId="12">
<md:author id="ref119685.author100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:author>
<md:author id="ref119685.author59167">
<md:lastName>Fisk</md:lastName>
<md:firstName>Mary B</md:firstName>
</md:author>
<md:year>1981</md:year>
<md:title>Geochemical studies of manganese nodules from the northeastern equatorial Pacific</md:title>
<md:source>Unpublished, Scripps Institution of Oceanography (SIO)</md:source>
</md:reference>
<md:reference dataciteRelType="IsDerivedFrom" group="300" id="ref67195" relationType="Source" relationTypeId="16">
<md:author id="ref67195.author53898">
<md:lastName>Grant</md:lastName>
<md:firstName>John Bruce</md:firstName>
</md:author>
<md:author id="ref67195.author568">
<md:lastName>Moore</md:lastName>
<md:firstName>Carla J</md:firstName>
<md:eMail>carla.j.moore@noaa.gov</md:eMail>
<md:orcid>0000-0002-2610-8648</md:orcid>
</md:author>
<md:author id="ref67195.author53899">
<md:lastName>Alameddin</md:lastName>
<md:firstName>George</md:firstName>
</md:author>
<md:author id="ref67195.author53900">
<md:lastName>Chen</md:lastName>
<md:firstName>Kuiying</md:firstName>
</md:author>
<md:author id="ref67195.author53901">
<md:lastName>Barton</md:lastName>
<md:firstName>Mark</md:firstName>
</md:author>
<md:year>1992</md:year>
<md:title>The NOAA and MMS Marine Minerals Geochemical Database</md:title>
<md:source>National Geophysical Data Center, NOAA</md:source>
<md:URI>https://doi.org/10.7289/V52Z13FT</md:URI>
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<md:reference dataciteRelType="IsDocumentedBy" group="640" id="ref67263" relationType="Further details" relationTypeId="17">
<md:author id="ref67263.author21391">
<md:lastName>Warnken</md:lastName>
<md:firstName>Robin R</md:firstName>
<md:eMail>rrw@luna.ngdc.noaa.gov</md:eMail>
</md:author>
<md:author id="ref67263.author53916">
<md:lastName>Virden</md:lastName>
<md:firstName>William T</md:firstName>
</md:author>
<md:author id="ref67263.author568">
<md:lastName>Moore</md:lastName>
<md:firstName>Carla J</md:firstName>
<md:eMail>carla.j.moore@noaa.gov</md:eMail>
<md:orcid>0000-0002-2610-8648</md:orcid>
</md:author>
<md:year>1992</md:year>
<md:title>The NOAA and MMS Marine Minerals Bibliography</md:title>
<md:source>National Geophysical Data Center, NOAA</md:source>
<md:URI>https://doi.org/10.7289/V53X84KN</md:URI>
</md:reference>
<md:extent>
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<md:westBoundLongitude>-140.158</md:westBoundLongitude>
<md:eastBoundLongitude>-140.07</md:eastBoundLongitude>
<md:southBoundLatitude>10.95</md:southBoundLatitude>
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<md:meanLatitude>11.009333333333332</md:meanLatitude>
</md:geographic>
<md:temporal>
<md:minDateTime>1975-12-01T00:00:00</md:minDateTime>
<md:maxDateTime>1975-12-01T00:00:00</md:maxDateTime>
</md:temporal>
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</md:elevation>
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<md:project id="project4198" type="International">
<md:label>NOAA-MMS</md:label>
<md:name>NOAA and MMS Marine Minerals Geochemical Database</md:name>
<md:URI>https://wiki.pangaea.de/wiki/NOAA-MMS</md:URI>
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<md:label>MN7503-01G11</md:label>
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<md:longitude>-140.088</md:longitude>
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<md:name>Pacific Ocean</md:name>
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<md:label>KKMN7503</md:label>
<md:name warning="deprecated">KKMN7503</md:name>
<md:optionalLabel>BOMDROP</md:optionalLabel>
<md:optionalName warning="deprecated">BOMDROP</md:optionalName>
<md:location id="event3073244.campaign3374216.loc1.term77716">
<md:name>Honolulu, United States</md:name>
</md:location>
<md:dateTime>1975-11-20T00:00:00</md:dateTime>
<md:start warning="deprecated">1975-11-20</md:start>
<md:location2 id="event3073244.campaign3374216.loc2.term77716">
<md:name>Honolulu, United States</md:name>
</md:location2>
<md:dateTime2>1975-12-09T00:00:00</md:dateTime2>
<md:end warning="deprecated">1975-12-09</md:end>
<md:basis id="event3073244.campaign3374216.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:responsible>Greenslate, J L</md:responsible>
<md:chiefScientist warning="deprecated">Greenslate, J L</md:chiefScientist>
<md:responsible>Gerard, Robert</md:responsible>
<md:chiefScientist warning="deprecated">Gerard, Robert</md:chiefScientist>
<md:attribute attid="76863" name="Report">https://searchworks.stanford.edu/view/4663282</md:attribute>
</md:campaign>
<md:basis id="event3073244.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:method id="event3073244.method11040">
<md:name>Free-fall grab</md:name>
<md:optionalName>FFGR</md:optionalName>
</md:method>
</md:event>
<md:event displayTypeName="Event" id="event3073245" typeName="Generic Event">
<md:label>MN7503-01G14</md:label>
<md:latitude>11.043</md:latitude>
<md:longitude>-140.07</md:longitude>
<md:location id="event3073245.loc1.term20898">
<md:name>Pacific Ocean</md:name>
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<md:label>KKMN7503</md:label>
<md:name warning="deprecated">KKMN7503</md:name>
<md:optionalLabel>BOMDROP</md:optionalLabel>
<md:optionalName warning="deprecated">BOMDROP</md:optionalName>
<md:location id="event3073245.campaign3374216.loc1.term77716">
<md:name>Honolulu, United States</md:name>
</md:location>
<md:dateTime>1975-11-20T00:00:00</md:dateTime>
<md:start warning="deprecated">1975-11-20</md:start>
<md:location2 id="event3073245.campaign3374216.loc2.term77716">
<md:name>Honolulu, United States</md:name>
</md:location2>
<md:dateTime2>1975-12-09T00:00:00</md:dateTime2>
<md:end warning="deprecated">1975-12-09</md:end>
<md:basis id="event3073245.campaign3374216.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:responsible>Greenslate, J L</md:responsible>
<md:chiefScientist warning="deprecated">Greenslate, J L</md:chiefScientist>
<md:responsible>Gerard, Robert</md:responsible>
<md:chiefScientist warning="deprecated">Gerard, Robert</md:chiefScientist>
<md:attribute attid="76863" name="Report">https://searchworks.stanford.edu/view/4663282</md:attribute>
</md:campaign>
<md:basis id="event3073245.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:method id="event3073245.method11040">
<md:name>Free-fall grab</md:name>
<md:optionalName>FFGR</md:optionalName>
</md:method>
</md:event>
<md:event displayTypeName="Event" id="event3035072" typeName="Generic Event">
<md:label>MN7503-01G19</md:label>
<md:optionalLabel>MN 7503/0191</md:optionalLabel>
<md:latitude>10.95</md:latitude>
<md:longitude>-140.158</md:longitude>
<md:location id="event3035072.loc1.term20898">
<md:name>Pacific Ocean</md:name>
</md:location>
<md:elevation>-4223.0</md:elevation>
<md:dateTime>1975-12-01T00:00:00</md:dateTime>
<md:campaign displayTypeName="Campaign" id="event3035072.campaign3374216" legacyId="event3035072.campaign49246" typeName="Generic Campaign">
<md:label>KKMN7503</md:label>
<md:name warning="deprecated">KKMN7503</md:name>
<md:optionalLabel>BOMDROP</md:optionalLabel>
<md:optionalName warning="deprecated">BOMDROP</md:optionalName>
<md:location id="event3035072.campaign3374216.loc1.term77716">
<md:name>Honolulu, United States</md:name>
</md:location>
<md:dateTime>1975-11-20T00:00:00</md:dateTime>
<md:start warning="deprecated">1975-11-20</md:start>
<md:location2 id="event3035072.campaign3374216.loc2.term77716">
<md:name>Honolulu, United States</md:name>
</md:location2>
<md:dateTime2>1975-12-09T00:00:00</md:dateTime2>
<md:end warning="deprecated">1975-12-09</md:end>
<md:basis id="event3035072.campaign3374216.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:responsible>Greenslate, J L</md:responsible>
<md:chiefScientist warning="deprecated">Greenslate, J L</md:chiefScientist>
<md:responsible>Gerard, Robert</md:responsible>
<md:chiefScientist warning="deprecated">Gerard, Robert</md:chiefScientist>
<md:attribute attid="76863" name="Report">https://searchworks.stanford.edu/view/4663282</md:attribute>
</md:campaign>
<md:basis id="event3035072.basis494">
<md:name>Kana Keoki</md:name>
</md:basis>
<md:method id="event3035072.method11040">
<md:name>Free-fall grab</md:name>
<md:optionalName>FFGR</md:optionalName>
</md:method>
</md:event>
<md:size unit="data points">44</md:size>
<md:license id="license21">
<md:label>CC-BY-4.0</md:label>
<md:name>Creative Commons Attribution 4.0 International</md:name>
<md:URI>https://creativecommons.org/licenses/by/4.0/</md:URI>
</md:license>
<md:comment>From 1983 until 1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions. At the time it was the most extended data compilation on ferromanganese deposits world wide. Initially published in a proprietary format incompatible with present day standards it was jointly decided by AWI and NOAA to transcribe this legacy data into PANGAEA. This transfer is augmented by a careful checking of the original sources when available and the encoding of ancillary information (sample description, method of analysis...) not present in the NOAA-MMS database.</md:comment>
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<md:parameter>
<md:name>Event label</md:name>
<md:shortName>Event</md:shortName>
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<md:PI id="col0.ds14966284.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
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<md:name>Latitude of event</md:name>
<md:shortName>Latitude</md:shortName>
</md:parameter>
<md:PI id="col1.ds14966284.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Latitude</md:caption>
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<md:name>Longitude of event</md:name>
<md:shortName>Longitude</md:shortName>
</md:parameter>
<md:PI id="col2.ds14966284.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Longitude</md:caption>
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<md:name>Elevation of event</md:name>
<md:shortName>Elevation</md:shortName>
<md:unit>m</md:unit>
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<md:PI id="col3.ds14966284.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Elevation [m]</md:caption>
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<md:matrixColumn col="4" id="col4.ds14966288" source="data" type="string">
<md:parameter id="col4.ds14966288.param7056">
<md:name>Identification</md:name>
<md:shortName>ID</md:shortName>
</md:parameter>
<md:PI id="col4.ds14966288.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>ID</md:caption>
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<md:matrixColumn col="5" id="col5.ds14966289" source="data" type="string">
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<md:name>Deposit type</md:name>
<md:shortName>Deposit type</md:shortName>
</md:parameter>
<md:PI id="col5.ds14966289.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Deposit type</md:caption>
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<md:matrixColumn behaviour="1" col="6" format="0" id="col6.ds14966290" source="geocode" type="numeric">
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<md:name>DEPTH, sediment/rock</md:name>
<md:shortName>Depth sed</md:shortName>
<md:unit>m</md:unit>
<md:term endOffset="5" fragment="1" id="col6.ds14966290.geocode1.term1073131" semanticURI="urn:obo:pato:term:0001595" startOffset="0" terminologyId="14" terminologyLabel="PATO">
<md:name>depth</md:name>
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<md:name>sediment</md:name>
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<md:name>rock</md:name>
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<md:PI id="col6.ds14966290.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Depth sed [m]</md:caption>
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<md:matrixColumn col="7" format="0.0" id="col7.ds14966291" source="data" type="numeric">
<md:parameter id="col7.ds14966291.param78">
<md:name>Manganese</md:name>
<md:shortName>Mn</md:shortName>
<md:unit>%</md:unit>
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<md:name>manganese</md:name>
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<md:optionalName>ψ</md:optionalName>
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<md:name>Atomic absorption spectrophotometry</md:name>
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<md:PI id="col7.ds14966291.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
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<md:caption>Mn [%]</md:caption>
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<md:parameter id="col8.ds14966292.param77">
<md:name>Iron</md:name>
<md:shortName>Fe</md:shortName>
<md:unit>%</md:unit>
<md:term id="col8.ds14966292.param77.term43794" semanticURI="http://qudt.org/1.1/vocab/quantity#DimensionlessRatio" terminologyId="13" terminologyLabel="PAN-Quantity">
<md:name>Dimensionless Ratio</md:name>
<md:optionalName>ψ</md:optionalName>
</md:term>
</md:parameter>
<md:method id="col8.ds14966292.method14658">
<md:name>Atomic absorption spectrophotometry</md:name>
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<md:PI id="col8.ds14966292.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
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<md:caption>Fe [%]</md:caption>
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<md:parameter id="col9.ds14966293.param15108">
<md:name>Cobalt</md:name>
<md:shortName>Co</md:shortName>
<md:unit>%</md:unit>
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<md:name>cobalt</md:name>
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<md:optionalName>ψ</md:optionalName>
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</md:parameter>
<md:method id="col9.ds14966293.method14658">
<md:name>Atomic absorption spectrophotometry</md:name>
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<md:PI id="col9.ds14966293.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
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<md:caption>Co [%]</md:caption>
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<md:name>nickel</md:name>
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<md:name>Dimensionless Ratio</md:name>
<md:optionalName>ψ</md:optionalName>
</md:term>
</md:parameter>
<md:method id="col10.ds14966294.method14658">
<md:name>Atomic absorption spectrophotometry</md:name>
</md:method>
<md:PI id="col10.ds14966294.pi100630">
<md:lastName>Siegel</md:lastName>
<md:firstName>Malcolm Dean</md:firstName>
</md:PI>
<md:caption>Ni [%]</md:caption>
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<md:matrixColumn col="11" format="0.00" id="col11.ds14966295" source="data" type="numeric">
<md:parameter id="col11.ds14966295.param33179">
<md:name>Copper</md:name>
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<md:unit>%</md:unit>
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<md:name>Atomic absorption spectrophotometry</md:name>
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