Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy (original) (raw)

Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italyi

Regional Level Types
Funtanafigu Quarry Quarry
Marrubiu Municipality
Oristano Province Province
Sardinia Autonomous Region
Italy - not defined -

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Latitude & Longitude (WGS84):

39° 46' 59'' North , 8° 43' 59'' East

Latitude & Longitude (decimal):

Long-form identifier:

mindat:1:2:16814:9

c9e999b6-8d2c-4f4c-a134-4cb96daffc19

Italian:

Cava Funtanafigu, Marrubiu, Oristano, Sardegna, Italia

Rhyolite quarry, about 4-5 km northeast of the town of Marrubiu and about 20 km southeast of Oristano.
Known for excellent osumilite crystals.

Note on the mineral list: At least some "cordierites" from this locality are actually an amorphous phase (possibly a pseudomorph), see Dillen (2022) and https://www.mindat.org/message.php?m=586359

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Standard Detailed Gallery Strunz

Chemical Elements

Mineral List

11 valid minerals.

Rock Types Recorded

Note: data is currently VERY limited. Please bear with us while we work towards adding this information!

Select Rock List Type

Alphabetical List Tree Diagram

Entries shown in red are rocks recorded for this region.

Detailed Mineral List:

ⓘ AlmandineFormula: Fe2+3Al2(SiO4)3References: Conti-Vecchi, G., Stara, P. (1991) I Minerali della Sardegna. STEF S.p.A. Cagliari: 176.
ⓘ CordieriteFormula: (Mg,Fe)2Al3(AlSi5O18)References: Sitta, S., Ventacoli, C., Turconi, B. (1983) Topazio, granato, cordierite al Monte Arci (CA). Rivista Mineralogica Italiana: 8(3): 81-84.
ⓘ 'Garnet Group'Formula: X3Z2(SiO4)3 References: Sitta, S., Ventacoli, C., Turconi, B. (1983) Topazio, granato, cordierite al Monte Arci (CA). Rivista Mineralogica Italiana: 8(3): 81-84.
ⓘ HematiteFormula: Fe2O3Habit: hexagonal tabularColour: opaque black with a pronounced metallic lustreReferences: Conti-Vecchi, G., Stara, P. (1991) I Minerali della Sardegna. STEF S.p.A. Cagliari: 176. Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).
ⓘ MulliteFormula: Al4+2xSi2-2xO10-xReferences: Bortolozi, G. (1986) Mullite e Pseudobrookite del M. Arci (Or). Rivista Mineralogica Italiana, Milano: 3: 136.
ⓘ MuscoviteFormula: KAl2(AlSi3O10)(OH)2Colour: brownReferences: De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini. Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).
ⓘ OsumiliteFormula: K◻2Fe2+2Al3[Al2Si10O30] Habit: tabularColour: black to blackish blue, sometimes coated with a brownish layer (reminiscent of a possible pseudomorph?)Description: This is actual Osumilite, see paper by Olsen & Bunch, 1970. SEM-EDS performed by Joy Desor.References: Olsen, Edward, Bunch, T. E. (1970) Compositions of natural osumilites. American Mineralogist, 55 (5-6) 875-879 De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini. Hochleitner, Rupert (1982) Osumilith. Osumilith-Kristalle von der Cava Funtanafigu [Osumilite. Osumilite crystals from Funtanafigu Quarry]. Lapis, 7 (11) 26-27 Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).
ⓘ PseudobrookiteFormula: Fe2TiO5References: Conti-Vecchi, G., Stara, P. (1991) I Minerali della Sardegna. STEF S.p.A. Cagliari: 176.
ⓘ QuartzFormula: SiO2References: De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini.
ⓘ SanidineFormula: K(AlSi3O8)References: Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).
ⓘ TopazFormula: Al2(SiO4)(F,OH)2Description: Individual crystals are usually smaller than 1 mm.References: Conti-Vecchi, G., Stara, P. (1991) I Minerali della Sardegna. STEF S.p.A. Cagliari: 176. Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).
ⓘ TridymiteFormula: SiO2Habit: Hexagonal plates, complex shapes and aggregates of multiple crystals. Frequently twinned.Description: SEM-EDS performed by Joy Desor.References: De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini. Dillen, Rik (2022) Avonturen in de Cava Funtanafigu, Sardinië. Geonieuws: 47(2): 50-56 (in Dutch).

List of minerals for each chemical element

H Hydrogen
H ⓘ Muscovite KAl2(AlSi3O10)(OH)2
H ⓘ Topaz Al2(SiO4)(F,OH)2
O Oxygen
O ⓘ Almandine Fe32+Al2(SiO4)3
O ⓘ Cordierite (Mg,Fe)2Al3(AlSi5O18)
O ⓘ Hematite Fe2O3
O ⓘ Mullite Al4+2xSi2-2xO10-x
O ⓘ Muscovite KAl2(AlSi3O10)(OH)2
O ⓘ Osumilite K◻2Fe22+Al3[Al2Si10O30]
O ⓘ Pseudobrookite Fe2TiO5
O ⓘ Quartz SiO2
O ⓘ Sanidine K(AlSi3O8)
O ⓘ Topaz Al2(SiO4)(F,OH)2
O ⓘ Tridymite SiO2
O ⓘ Garnet Group X3Z2(SiO4)3
F Fluorine
F ⓘ Topaz Al2(SiO4)(F,OH)2
Mg Magnesium
Mg ⓘ Cordierite (Mg,Fe)2Al3(AlSi5O18)
Al Aluminium
Al ⓘ Almandine Fe32+Al2(SiO4)3
Al ⓘ Cordierite (Mg,Fe)2Al3(AlSi5O18)
Al ⓘ Mullite Al4+2xSi2-2xO10-x
Al ⓘ Muscovite KAl2(AlSi3O10)(OH)2
Al ⓘ Osumilite K◻2Fe22+Al3[Al2Si10O30]
Al ⓘ Sanidine K(AlSi3O8)
Al ⓘ Topaz Al2(SiO4)(F,OH)2
Si Silicon
Si ⓘ Almandine Fe32+Al2(SiO4)3
Si ⓘ Cordierite (Mg,Fe)2Al3(AlSi5O18)
Si ⓘ Mullite Al4+2xSi2-2xO10-x
Si ⓘ Muscovite KAl2(AlSi3O10)(OH)2
Si ⓘ Osumilite K◻2Fe22+Al3[Al2Si10O30]
Si ⓘ Quartz SiO2
Si ⓘ Sanidine K(AlSi3O8)
Si ⓘ Topaz Al2(SiO4)(F,OH)2
Si ⓘ Tridymite SiO2
Si ⓘ Garnet Group X3Z2(SiO4)3
K Potassium
K ⓘ Muscovite KAl2(AlSi3O10)(OH)2
K ⓘ Osumilite K◻2Fe22+Al3[Al2Si10O30]
K ⓘ Sanidine K(AlSi3O8)
Ti Titanium
Ti ⓘ Pseudobrookite Fe2TiO5
Fe Iron
Fe ⓘ Almandine Fe32+Al2(SiO4)3
Fe ⓘ Cordierite (Mg,Fe)2Al3(AlSi5O18)
Fe ⓘ Hematite Fe2O3
Fe ⓘ Osumilite K◻2Fe22+Al3[Al2Si10O30]
Fe ⓘ Pseudobrookite Fe2TiO5

Other Regions, Features and Areas containing this locality

Italy

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References

Assorgia, A., Beccaluva, L., Di Paola, G.M., Maccioni, L., Macciotta, G., Puxeddu, M., Santacroce, R., Venturelli, G. (1976) Il complesso vulcanico di Monte Arci (Sardegna centro-occidentale). Nota illustrativa alla carta geo-petrografica 1:50.000. Bollettino Della Società' Geologica Italiana: 95(1-2): 371-401.

Cioni, R., Clocchiatti, R., Di Paola, G.M., Santacroce, R., Tonarini, S. (1982) Miocene calcalkaline heritage in the Pliocene post-collisional volcanism of Monte Arci (Sardinia, Italy). Journal of Volcanology and Geothermal Research: 14: 137-167. https://www.academia.edu/24869596/Miocene_calc_alkaline_heritage_in_the_pliocene_postcollisional_volcanism_of_monte_arci_Sardinia_Italy_