Citation:

PANGAEA.995327

Name: Heavy mineral composition of the Lanaittu Sandstone in Eastern Sardinia, Italy
Published: 2026-06-23
License: https://creativecommons.org/licenses/by/4.0/
Keywords: Eastern Sardinia; heavy minerals

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Published: 2026-06-23 • DOI registered: 2026-06-23

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Abstract:

Analyses of Lanaittu Sandstone (middle-upper Campanian, Eastern Sardinia, Italy), recovered from a geognostic well cored in 1989, permit reconstruction of the paleogeography of this area. Heavy mineral associations were analyzed in the 60-250 μm fraction of selected arenites. Samples were crushed and sieved to <4 mm, then disaggregated by etching with 10% hydrochloric acid to remove carbonate and apatite. For gravity separation, tetrabromoethane (density 2.967 g/cm³) was used. The ribbon method was used for quantitative analysis until 200 transparent grains were determined (Gazzi et al., 1973). The transparent heavy mineral assemblage includes rare glaucophane-crossite combined, up to 13% kyanite, and trace amounts of lawsonite, indicating a HP-LT metamorphic source.

Keyword(s):

Eastern Sardinia; heavy minerals

Supplement to:

Massari, Francesco; Fellin, Maria Giuditta; Stefani, Cristina; Enkelmann, Eva; Dieni, Iginio; Sanchetti, Stefano (accepted): Exhumed eo-Alpine high-pressure rocks fed Campanian turbidites in eastern Sardinia. Geochemistry, Geophysics, Geosystems

References:

Gazzi, P; Zuffa, G G; Gandolfi, G; Paganelli, L (1973): Provenienza e dispersione litoranea delle sabbie delle spiagge adriatiche fra le foci dell'Isonzo e del Foglia: inquadramento regionale [in Italian]. Memorie della Società Geologica Italiana, 12, 1-37

Funding:

Natural Sciences and Engineering Research Council (NSERC), grant/award no. 03863: RGPIN-2024

Coverage:

Latitude: 40.259200 * Longitude: 9.501400

Date/Time Start: 1994-01-01T00:00:00 * Date/Time End: 1994-01-01T00:00:00

Minimum DEPTH, sediment/rock: 12.43 m * Maximum DEPTH, sediment/rock: 27.50 m

Event(s):

Lanaittu_core * Latitude: 40.259200 * Longitude: 9.501400 * Date/Time: 1994-01-01T00:00:00 * Penetration: 27.62 m * Location: Eastern Sardinia * Method/Device: Drilling/coring

Comment:

Values <0.01 = traces

Parameter(s):

#	Name	Short Name	Unit	Principal Investigator	Method/Device	Comment
1	Sample code/label	Sample label		Sanchetti, Stefano
2	DEPTH, sediment/rock	Depth sed	m	Sanchetti, Stefano		Geocode
3	Sample comment	Sample comment		Sanchetti, Stefano
4	Heavy minerals	HM	%	Sanchetti, Stefano	According to Gazzi et al. (1973)
5	Transparent minerals	Transparent	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
6	Opaque minerals	Opaque	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
7	Turbid minerals	Turbid	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
8	Zircon	Zrn	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
9	Tourmaline	Tur	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
10	Rutile	Rt	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
11	Garnet	Grt	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
12	Titanite	Ttn	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
13	Epidote	Ep	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
14	Zoisite+clinozoisite	Zoisite+clinozoisite	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
15	Chloritoid	Cld	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
16	Staurolite	St	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
17	Glaucophane-crossite	Glaucophane-crossite	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
18	Kyanite	Ky	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
19	Andalusite	And	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
20	Lawsonite	Lws	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
21	Vesuvianite	Ves	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
22	Olivine	Ol	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
23	Anatase	Ant	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
24	Brookite	Brk	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
25	Monazite	Mnz	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
26	Xenotime	Xtm	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
27	Corundum	Crn	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]
28	Minerals, unidentified	Min unident	%	Sanchetti, Stefano	Light microscope, Zeiss [ocular KPL W 12.5X; magnification: 5x, 10x, 25x and 40x]

License:

Creative Commons Attribution 4.0 International (CC-BY-4.0)

Status:

Curation Level: Enhanced curation (CurationLevelC)

Size:

94 data points

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