Mt. Arci, Oristano Province, Sardinia, Italy (original) (raw)

ⓘ Almandine

Formula: Fe2+3Al2(SiO4)3

ⓘ 'Almandine-Spessartine Series'

ⓘ Analcime

Formula: Na(AlSi2O6) · H2O

ⓘ Ankerite

Formula: Ca(Fe2+,Mg)(CO3)2

ⓘ Calcite

Formula: CaCO3

ⓘ Chalcopyrite

Formula: CuFeS2

ⓘ Cordierite

Formula: (Mg,Fe)2Al3(AlSi5O18)

ⓘ Cristobalite

Formula: SiO2

ⓘ Dingdaohengite-(Ce)

Formula: (Ce,La)4Fe2+(Ti,Fe2+,Mg,Fe3+)2Ti2(Si2O7)2O8

ⓘ Fluorite

Formula: CaF2

ⓘ Fluoro-edenite

Formula: NaCa2Mg5(Si7Al)O22F2

References:

Gianluca Odicino, Marco E. Ciriotti, Fernando Cámara, Pietro Vignola, Luigi Sanciu, Angelo Giuseppe Tanca, Alessandra Marengo, Erica Bittarello, Piero Brizio, Bruno Marello Taraxi, Monte Arci, Masullas, Sardegna Centro-Occidentale: minerali del sottogruppo della chevkinite. Micro, 22, 179-192.

ⓘ Galena

Formula: PbS

ⓘ 'Garnet Group'

Formula: X3Z2(SiO4)3

ⓘ Hematite

Formula: Fe2O3

Localities:

Zuarbara quarry, Marrubiu, Oristano Province, Sardinia, Italy
Conca Cannas quarry, Masullas, Oristano Province, Sardinia, Italy
Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy
Rio Naretzi, Pau, Oristano Province, Sardinia, Italy

ⓘ Ilmenite

Formula: Fe2+TiO3

ⓘ Lead

Formula: Pb

ⓘ Litharge

Formula: PbO

ⓘ Magnesio-fluoro-arfvedsonite

Formula: [Na][Na2][Mg4Fe3+][Si8O22](F,OH)2

References:

Gianluca Odicino, Marco E. Ciriotti, Fernando Cámara, Pietro Vignola, Luigi Sanciu, Angelo Giuseppe Tanca, Alessandra Marengo, Erica Bittarello, Piero Brizio, Bruno Marello Taraxi, Monte Arci, Masullas, Sardegna Centro-Occidentale: minerali del sottogruppo della chevkinite. Micro, 22, 179-192.

ⓘ Marcasite

Formula: FeS2

ⓘ Mullite

Formula: Al4+2xSi2-2xO10-x

ⓘ Muscovite

Formula: KAl2(AlSi3O10)(OH)2

Colour: brown

ⓘ Opal

Formula: SiO2 · nH2O

ⓘ Osumilite

Formula: K◻2Fe2+2Al3[Al2Si10O30]

Habit: tabular

Colour: 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.

ⓘ 'Osumilite Group'

Formula: (XIIC)(IXB)2(VIA)2(IVT2)3[(IVT1)12O30]

ⓘ Paragonite

Formula: NaAl2(AlSi3O10)(OH)2

ⓘ Pseudobrookite

Formula: Fe2TiO5

ⓘ Pyrite

Formula: FeS2

ⓘ Quartz

Formula: SiO2

Localities:

Zuarbara quarry, Marrubiu, Oristano Province, Sardinia, Italy
Masullas, Oristano Province, Sardinia, Italy
Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy

ⓘ Quartz var. Agate-Jasper

Formula: SiO2

ⓘ Quartz var. Amethyst

Formula: SiO2

ⓘ Quartz var. Chalcedony

Formula: SiO2

ⓘ Sanidine

Formula: K(AlSi3O8)

ⓘ Silver

Formula: Ag

ⓘ Topaz

Formula: Al2(SiO4)(F,OH)2

ⓘ Tridymite

Formula: SiO2

Localities:

Zuarbara quarry, Marrubiu, Oristano Province, Sardinia, Italy
Conca Cannas quarry, Masullas, Oristano Province, Sardinia, Italy
Funtanafigu Quarry, Marrubiu, Oristano Province, Sardinia, Italy
Rio Naretzi, Pau, Oristano Province, Sardinia, Italy