Calcite from Monteriggioni, Italy

On the typical yellow limestone matrix of this italian locality, there are several calcite cristals. Their color varies from white to honey and the dimensions are about 10mm.

Calcite fluoresces yellow, very bright at every UV wavelenght. In Sw some zones seem to tend to green

It’s phosphorescent too (green).

The origin locality is more famous for the black quartz...type it on google....

Dimensions: 6,5 x 3,5 x 3,5 cm

Weight: 337 g

Origin: Monteriggioni, Siena Province, Tuscany, Italy

Su una matrice calcarea gialla, tipica di questa zona della Toscana, si trovano ammassati cristalli di calcite dal colore variabile da bianco a mielato di dimensioni che raggiungono e superano i 10mm. Tra la calcite e la matrice calcarea si trova un sottile strato nero metallico lucente. La calcite è fluorescente giallo-crema, molto brillante, a tutte le lunghezze d’onda UV; in Sw forse la tonalità vira verso il verde...

E’ presente anche una fosforescenza verde.

UV (similar in Lw Sw and Mw)


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