Citation:

geologija.2006.005

Name: Annotated record of the detailed examination of fossil Mn nodules from Slovenia
Published: 2006
License: https://creativecommons.org/licenses/by/3.0/

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Published: 2006 (exact date unknown) • DOI registered: 2017-02-16

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Abstract:

One of geological peculiarities in the Julian Alps is red pelagic limestone containing manganese nodules. They are encountered at several localities in the Bovec, Trenta and Krn area, occurring in some metres thick horizon of the Upper Liassic age. The nodule forms are disc-like attaining up to 12 cm in diameter. Mineral composition is characterized by pyrolusite, psilomelane, manganite and hausmannite. The shear of Mn in the nodules is low ranging from 0.8 % to 3.5 %. The Fe amount attains up to 1,7 %, in some samples, however, Fe exceeds Mn. At Mangart and at Begunjscica, Mn ore beds occur in a thinner horizon in a sequence of slate, radiolarite and crinoidal limestone. Herein, the amount of MnO reaches up to 60 %.

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:

Median Latitude: 46.346329 * Median Longitude: 13.748098 * South-bound Latitude: 46.255129 * West-bound Longitude: 13.565138 * North-bound Latitude: 46.418399 * East-bound Longitude: 14.231544

Minimum Elevation: 448.0 m * Maximum Elevation: 2189.0 m

Event(s):

Begunjscica_O * Latitude: 46.418399 * Longitude: 14.231544 * Elevation: 1785.0 m

Bovski_Gamsovec_O * Latitude: 46.396458 * Longitude: 13.812844 * Elevation: 2189.0 m

Koritnica_O * Latitude: 46.370564 * Longitude: 13.586767 * Elevation: 540.0 m

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1989 NOAA-NCEI compiled the NOAA-MMS Marine Minerals Geochemical Database from journal articles, technical reports and unpublished sources from other institutions.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
1	Event label	Event		Ogorelec, S
2	Latitude of event	Latitude		Ogorelec, S
3	Longitude of event	Longitude		Ogorelec, S
4	Elevation of event	Elevation	m	Ogorelec, S
5	Identification	ID		Ogorelec, S
6	Height	Height	m	Ogorelec, S
7	Position	Position		Ogorelec, S	Visual description
8	Deposit type	Deposit type		Ogorelec, S
9	Quantity of deposit	Quantity		Ogorelec, S
10	Size	Size		Ogorelec, S
11	Sediment type	Sediment		Ogorelec, S
12	Comment	Comment		Ogorelec, S
13	Description	Description		Ogorelec, S
14	File name	File name		Ogorelec, S
15	Uniform resource locator/link to image	URL image		Ogorelec, S

License:

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

Size:

71 data points

Data

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

1 Event	2 Latitude	3 Longitude	4 Elevation [m]	5 ID	6 Height [m]	7 Position	8 Deposit type	9 Quantity	10 Size	11 Sediment	12 Comment	13 Description	14 File name	15 URL image
Tiglav_O	46.3216	13.7804	1722	Tiglav_O-1	1.5	Buried	Mn nodule	Several		Limestone	40 cm above contact, in crinoidal limestone belonging to red Upper Lias Toarcian limestones overlying Dachstein limestone in the Lofer formation	A 3m thick horizon with manganese nodules with concentric structure
Luznica_O	46.2551	13.6850	1821	Luznica_O-1	5.0	Buried	Mn nodule	Several		Limestone	Lower Lias oolitic limestone up to 10 metres thick	30cm wide fissures filled by crinoidal limestone and a thin bed of micritic limsteone with manganese nodules
Luznica_O	46.2551	13.6850	1821	Luznica_O-2	5.0	Buried	Mn crust	Several		Limestone	Lower Lias oolitic limestone up to 10 metres thick	30cm wide fissures filled by crinoidal limestone with irregular manganese crusts.
Ravni_Laz_O	46.3499	13.5749	566	Ravni_Laz_O-1	1.0	Buried	Mn coating	Many		Limestone	Lower Liassic biosparitic limestone encasing a 2 m of red crinoidal-micritic limestone	Numerous filaments and manganese mineralization
Koritnica_O	46.3706	13.5868	540	Koritnica_O	0.0	Buried	Mn nodule	Several	5.0 cm	Limestone	Above Lower Liassic oolitic limestone in Toarcian micritic limestone	5 cm thick nodules of greyish brown colour (2.1 % Fe and only 0.3 % Mn)	Fig3_Ogorolec_2006.jpg	Fig3_Ogorolec_2006.jpg
Slatenik_O	46.3123	13.5651	448	Slatenik_O	1.0	Buried	Mn nodule	Many	Up to 12.0 cm	Limestone	Overlaying Lower Liassic oolitic limestone, up to 2 m thick rosy limestone	Dense cover of manganese nodules up to 12 cm in diameter	Fig4_Ogorolec_2006.jpg	Fig4_Ogorolec_2006.jpg
Bovski_Gamsovec_O	46.3965	13.8128	2189	Bovski_Gamsovec_O	0.0	Buried	Mn nodule	Several	Up to 5.0 cm	Limestone	Reddish Toarcian limestone	Up to 5 cm large black-brown manganese nodules
Begunjscica_O	46.4184	14.2315	1785	Begunjscica_O	0.0	Buried	Mn nodule	Few		Limestone	Neptunian dykes in Upper Triassic limestone filled by variegated Jurassic breccia or crinoidal limestones. Red to greyish nodular limestone of the ""ammonitico rosso"" type	A shaly manganese rich (up to 60% Mn) mudstone with in rare places in the limestone are spheric manganese nodules