/* DATA DESCRIPTION:
Citation:	Halbach, Peter (1975): Observation of manganese nodules and encrustations in various lakes of Finland [dataset]. PANGAEA, https://doi.org/10.1594/PANGAEA.864229, 
	Supplement to: Halbach, P (1976): Mineralogical and geochemical investigations on Finnish lake ores. Bulletin of the Geological Society of Finland, 48(1-2), 33-42, https://doi.org/10.17741/bgsf/48.1-2.004
Abstract:	The limnic ferromanganese ore concretions in some Finnish lakes are described. Their chemical and mineral compositions have been measured as have their natural surroundings — the latter by means of physico-chemical in-situ analysis. The sources of the nodules' contents are discussed, and a theory based on the calculated precipitation fields of the important ore minerals is presented for the ore formation.
Source:	Grant, John Bruce; Moore, Carla J; Alameddin, George; Chen, Kuiying; Barton, Mark (1992): The NOAA and MMS Marine Minerals Geochemical Database. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V52Z13FT
Further details:	Warnken, Robin R; Virden, William T; Moore, Carla J (1992): The NOAA and MMS Marine Minerals Bibliography. National Geophysical Data Center, NOAA, https://doi.org/10.7289/V53X84KN
Project(s):	NOAA and MMS Marine Minerals Geochemical Database (NOAA-MMS) (URI: https://wiki.pangaea.de/wiki/NOAA-MMS)
Coverage:	MEDIAN LATITUDE: 63.351395 * MEDIAN LONGITUDE: 26.323438 * SOUTH-BOUND LATITUDE: 62.237710 * WEST-BOUND LONGITUDE: 25.170400 * NORTH-BOUND LATITUDE: 63.966571 * EAST-BOUND LONGITUDE: 26.900000
	MINIMUM DEPTH, sediment/rock: 0 m * MAXIMUM DEPTH, sediment/rock: 0 m
Event(s):	Kirrinjarvi_H * LATITUDE: 62.237710 * LONGITUDE: 25.170400 * ELEVATION: 111.0 m * LAKE WATER DEPTH: 2 m * LOCATION: Finland
	Rotimojarvi_H * LATITUDE: 63.966571 * LONGITUDE: 26.900000 * ELEVATION: 156.0 m * LOCATION: Finland
	Salahmijarvi_H * LATITUDE: 63.849904 * LONGITUDE: 26.899914 * ELEVATION: 109.0 m * LOCATION: Finland
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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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.
Parameter(s):	Event label (Event) * PI: Halbach, Peter
	Latitude of event (Latitude) * PI: Halbach, Peter
	Longitude of event (Longitude) * PI: Halbach, Peter
	Elevation of event [m] (Elevation) * PI: Halbach, Peter
	Sample ID (Sample ID) * PI: Halbach, Peter
	DEPTH, sediment/rock [m] (Depth sed) * GEOCODE * PI: Halbach, Peter
	Position (Position) * PI: Halbach, Peter
	Deposit type (Deposit type) * PI: Halbach, Peter
	Quantity of deposit (Quantity) * PI: Halbach, Peter
	Size (Size) * PI: Halbach, Peter
	Shape (Shape) * PI: Halbach, Peter
	Substrate type (Substrate) * PI: Halbach, Peter
	Description (Description) * PI: Halbach, Peter
	Uniform resource locator/link to image (URL image) * PI: Halbach, Peter
License:	Creative Commons Attribution 3.0 Unported (CC-BY-3.0) (URI: https://creativecommons.org/licenses/by/3.0/)
Size:	37 data points
*/
Event	Latitude	Longitude	Elevation [m]	Sample ID	Depth sed [m]	Position	Deposit type	Quantity	Size	Shape	Substrate	Description	URL image
Salahmijarvi_H	63.8499	26.8999	109	Salahmijarvi_H-1	0	Surface	Mn nodule	Several					
Rotimojarvi_H	63.9666	26.9000	156	Rotimojarvi_H-1	0	Surface	Mn nodule	Several	0.1-0.5 cm	Spherical		The pisolithic ores are spherical or pear shaped and vary in diameter from several mm to 1.6 cm.	hdl:10013/epic.48491.d001
Kirrinjarvi_H	62.2377	25.1704	111	Kirrinjarvi_H-1	0	Surface	Mn nodule	Several	1.5-6.0 cm	Discoidal	Core; rock fragment	Penny ores consisting of flattened discoids with on many samples a margin tilting upwards. The surface is granulous and often includes a nucleus of detrital grains or rock fragments. Thickness is 0.4 to 1.5 cm and the diameters are about 1.5 to 6.0 cm.	hdl:10013/epic.48491.d002
Kirrinjarvi_H	62.2377	25.1704	111	Kirrinjarvi_H-2	0	Surface	Mn crust	Several	10.0 cm	Discoidal		The crust ores sometimes consist of large saucer-shaped nodules	hdl:10013/epic.48491.d003
Kirrinjarvi_H	62.2377	25.1704	111	Kirrinjarvi_H-3	0	Surface	Mn crust	Several	10.0 cm	Flat		Most Mn crusts are flattened and usually intergrown incrustations several cm thick	hdl:10013/epic.48491.d004