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Granaglione, Alto Reno Terme, Reno Valley, Bologna Province, Emilia-Romagna, Italy

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Name(s) in local language(s):Granaglione, Alto Reno Terme, Valle del Reno, Provincia di Bologna, Emilia-Romagna, Italia


On 1 January 2016 the former municipalities of Granaglione and Porretta Terme were merged into the new municipality of Alto Reno Terme.

The presence of quartz crystals in rock clefts of the Arenarie di Suviana (Porretta Sandstone) formation along the slopes of Monte Granaglione, to the north of Granaglione village, is known for a long time (e.g. Gambari, 1868; Bombicci, 1874; Jervis, 1874). Quartz crystals tipically developed skeletal growth forms and show inclusions of light yellow-grey clay. Crystals frequently contain also water and gaseous hydrocarbon inclusions. These crystals have smooth and lustrous, in part curved faces and very often they form aggregates of two or more crystals.

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Standard Detailed Strunz Dana Chemical Elements

Mineral List

Mineral list contains entries from the region specified including sub-localities

2 valid minerals.

List of minerals arranged by Strunz 10th Edition classification

Group 4 - Oxides and Hydroxides
'Opal'4.DA.10SiO2 · nH2O
'Quartz'4.DA.05SiO2

List of minerals arranged by Dana 8th Edition classification

Group 75 - TECTOSILICATES Si Tetrahedral Frameworks
Si Tetrahedral Frameworks - SiO2 with [4] coordinated Si
Quartz75.1.3.1SiO2
Si Tetrahedral Frameworks - SiO2 with H2O and organics
Opal75.2.1.1SiO2 · nH2O

List of minerals for each chemical element

HHydrogen
H OpalSiO2 · nH2O
OOxygen
O OpalSiO2 · nH2O
O QuartzSiO2
SiSilicon
Si OpalSiO2 · nH2O
Si QuartzSiO2

References

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Year (asc) Year (desc) Author (A-Z) Author (Z-A)
Gambari, L. (1868) Descrizione dei quarzi di Porretta. Atti della Società dei naturalisti e matematici di Modena, 3, 1-19.
Bombicci, L. (1874) Descrizione della mineralogia generale della provincia di Bologna. Seconda parte. Memorie della R. Accademia delle Scienze dell'Istituto di Bologna, serie 3, 5, 105-222.
Jervis, G. (1874) I tesori sotterranei dell'Italia. Vol. 2: Regione dell’Appennino e vulcani attivi e spenti dipendentivi. Ermanno Loescher, Torino, XVIII+624 pp.

Localities in this Region
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Italy

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