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PROVENIENCE

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MINERALOGY

ORIGIN

Tersfer

Full Image of the Core

Boccasuolo Quarry, Northern Apennines, Modena District, ITALY

Not perfect rounded sphere

Fe = 37%

S = 50%

O = 13%

Pyrite

Hydrotermal veins in Sandstones

Tersfer1

Full image of the surface of Tersfer

Boccasuolo Quarry, Northern Apennines, Modena District, ITALY

Not perfect rounded sphere

Fe = 37%

S = 50%

O = 13%

Pyrite

Hydrotermal veins in Sandstones

Tersfer2

Particular

Castelnovo ne’Monti Quarry, Northern Apennines, Reggio Emilia District, ITALY

Not perfect rounded sphere

Ba = 37%

S = 30%

O = 33%

Barium Suphate (Barite)

Hydrotermal veins in Clay rocks

Tersfer3

Full Image

Ca’ de Vanni Quarry, Northern Apennines,

Modena District, ITALY

Botroidal spherule aggregate

Ca = 40%

Si = 20 %

O = 40 %

Calcite with a amorphous silicium core

Hydrotermal veins in Clay rocks

Tersfer4

Full Image

Romanoro, Northern Apennines,

Modena District, ITALY

Sphere

Fe = 39%

S = 50%

O = 11%

Pyrite

Diagenetic sphere in calcareous sediments

Tersfer5

Full Image

Castelnovo ne’Monti Quarry, Northern Apennines, Reggio Emilia District, ITALY

Sphere

Mg = 10%

Si = 37 %

Al = 7%

Na = 25%

P = 1%

Ca = 11 %

O = 9 %

Clay

Sedimentary sphere due to the ancient paleocurrents