Citation:

21192.pdf

Name: Annotated record of the detailed examination of Mn deposits from the coastal vicinity of the Vulcano Island in the Eolian Islands, Italy
Published: 1979
License: https://creativecommons.org/licenses/by/3.0/

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Abstract:

The volcanic deposits which surround Vulcano Island may be classified in four phases : a detritic phase, fed from the Island itself and from Sicily; a siliceous and carbonateous organic phase; a neogenesis mineral phase; a precipitation phase. The formation of clay and the mineralization of iron and manganese are the subject of particular study. A number of indications suggest the littoral neogenesis of kaolinite around hydrothermal issues, and the formation of smectite at greater depths. The distribution of iron mineralization in the Baie du Levant follows the physicochemical variations of the environment. Melnikovite, pyrite, marcassite and pyrrhotin are dispersed in aureoles around swallow emission points (fumaroles). Close to the hydrothermal spring, iron precipitates are found in the form of amorphous hydroxydes, while geothite and hematite characterize the deeper area as a whole. Manganese mineralizations are exclusively represented by hydroxides and oxides, locally (about - 250 m) organized as incrustations on. lapilli glasses (micronodules). These would appear to be related to the hydrothermal spring.

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)

Coverage:

Latitude: 38.417457 * Longitude: 14.975427

Minimum DEPTH, sediment/rock: 0 m * Maximum DEPTH, sediment/rock: 0 m

Event(s):

Vulcano_M * Latitude: 38.417457 * Longitude: 14.975427 * Elevation: -250.0 m * Location: Vulcano Island, Italy * Method/Device: Dredge (DRG)

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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample ID	Sample ID		Monaco, Andre
2	DEPTH, sediment/rock	Depth sed	m	Monaco, Andre		Geocode
3	Position	Position		Monaco, Andre	Visual description
4	Deposit type	Deposit type		Monaco, Andre
5	Quantity of deposit	Quantity		Monaco, Andre
6	Size	Size		Monaco, Andre
7	Substrate type	Substrate		Monaco, Andre
8	Sediment type	Sediment		Monaco, Andre
9	Comment	Comment		Monaco, Andre
10	Description	Description		Monaco, Andre

License:

Creative Commons Attribution 3.0 Unported (CC-BY-3.0)

Size:

9 data points

Data

Download dataset as tab-delimited text — use the following character encoding:

1 Sample ID	2 Depth sed [m]	3 Position	4 Deposit type	5 Quantity	6 Size	7 Substrate	8 Sediment	9 Comment	10 Description
Vulcano_M-1	0	Surface	Mn coating	Several	10-20 micrometers thick	Microbeads; volcanic	Clay	Sandy clay deposits (40% pelites)	The manganese deposit is in a form of a coating with 10-20 micrometers thickness deposited on small volcanic glass particles (microbeads) of about 150 micrometers.