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Alessandro Cantamessa's Photo Gallery

544-YQDQuartz (Var: Amethyst) SiO2

06200860017062144363565.jpg
Arcu di Monte Nieddu, Nuxis, South Sardinia Province, Sardinia, Italy

Dimensions: 110 mm x 60 mm x 50 mm

Unusual specimen of sardinian Amethyst bought at Cossato Mineral Fair, 2023, directly from the collector P. Grammatica.
Photo and collection Alessandro Cantamessa (#2369).
Photo ID: 1346611     Uploaded by: Alessandro Cantamessa   Upload date: 2024-01-16   View Count: 36    Status: Public galleries    Type: Photo - 3253×1830 (6.0 Mpix)

1F3-5WMPyrite FeS2 , Quartz SiO2 , Sphalerite ZnS , Calcite CaCO3

06284900017063761282022.jpg
Brad, Hunedoara County, Romania

Dimensions: 57 mm x 38 mm x 32 mm

"Awesome paragenesis"
Bright, striated cubic Pyrite crystals nestled among weakly smoked Quartz crystals, sided by pitch black Sphalerite crystals grown on tabular creamy Calcite crystals. Bought at Turin Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2420).
Photo ID: 1336414     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 25    Status: Public galleries    Type: Photo - 2990×1869 (5.6 Mpix)

50V-JQAMuscovite KAl2(AlSi3O10)(OH)2 , Sphalerite ZnS

08623270017057000747870.jpg
Panasqueira Mines, Portugal

Dimensions: 98 mm x 54 mm x 50 mm

A dense, undamaged intertwining of Muscovite lamellae grown in rosettes, among which some dark Sphalerite crystals peek out. The specimen also features minor crystals of Fluorapatite and Pyrite, not visible in the photo. Bought at Turin Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2429).
Photo ID: 1336409     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 25    Status: Public galleries    Type: Photo - 3152×1970 (6.2 Mpix)

P9R-84VAndradite (Var: Demantoid) Ca3Fe3+2(SiO4)3

01063030017063761299600.jpg
Monte Pian Real, Villar Focchiardo, Metropolitan City of Turin, Piedmont, Italy

Dimensions: 45 mm x 40 mm x 38 mm

Gemmy Demantoid crystals, a specimen dating back to the 1980s, now unobtainable, result of personal research by the dealer L. Caletti and his late brother-in-law. Bought at Pino Torinese (To) Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2437).
Photo ID: 1336405     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 12    Status: User gallery only    Type: Photo - 2694×2021 (5.4 Mpix)

J7L-98RDolomite CaMg(CO3)2 , Siderite FeCO3

06100760017058072753323.jpg
Villaret pit, Susville, Grenoble, Isère, Auvergne-Rhône-Alpes, France

Dimensions: 160 mm x 70 mm x 18 mm

"A French classic"
...as called another specimen, twin of this one, shown in this photo gallery.
White Dolomite rhombohedral crystals grown on a base of honey lenticular Siderite crystals ("Mesitite", according to an obsolete nomenclature). Bought at S. Maurizio Canavese (To) Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2436).
Photo ID: 1336402     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 14    Status: Public galleries    Type: Photo - 3354×1887 (6.3 Mpix)

3HG-YNWGoethite α-Fe3+O(OH) , Pyrite FeS2 , Limestone

06413450017063761297510.jpg
Rocca Speron, San Lorenzo, Valdieri, Cuneo Province, Piedmont, Italy

Dimensions: 90 mm x 65 mm x 56 mm

Complex Pyrite crystals totally replaced by brown Goethite on limestone matrix. Bought at S. Maurizio Canavese (To) Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2435).
Photo ID: 1336400     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 11    Status: Public galleries    Type: Photo - 3089×1931 (6.0 Mpix)

D5F-ADNPyrite FeS2 , Magnetite Fe2+Fe3+2O4 , Talc Mg3Si4O10(OH)2

03212860017063761304847.jpg
Brosso Mine, Calea, Lessolo, Metropolitan City of Turin, Piedmont, Italy

Dimensions: 95 mm x 75 mm x 50 mm

Pyrite crystals with unusual Magnetite crossing veins (dark) on talc mineral coming from Perariunda mining level. Bought at Turin Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2432).
Photo ID: 1336399     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 12    Status: Public galleries    Type: Photo - 3129×1956 (6.1 Mpix)

739-CHKAxinite-(Fe) Ca2Fe2+Al2BSi4O15OH , Quartz SiO2

07635130017063761309990.jpg
Brunni Valley, Schächen Valley, Uri, Switzerland

Dimensions: 25 mm x 20 mm x 10 mm

Dark gemmy Axinite crystals tipically striated, with vitreous Quartz crystals. Bought at Martigny Mineral Fair, 2022.
Photo and collection Alessandro Cantamessa (#2311).
Photo ID: 1336397     Uploaded by: Alessandro Cantamessa   Upload date: 2023-11-26   View Count: 12    Status: Public galleries    Type: Photo - 1719×1719 (3.0 Mpix)

No drone required

06648370017058090565589.jpg
Kreas Mine, Alagna Valsesia, Vercelli Province, Piedmont, Italy

No drone is required to take this quasi-aerial photo of the abandoned Kreas mining site, currently being adapted for tourist visits.
In fact all that is needed is to take the path going up from Piedimonte to Alpe Campo, with its spectacular view of the southern face of the Monte Rosa massif.
Photo Alessandro Cantamessa 2023
Photo ID: 1329998     Uploaded by: Alessandro Cantamessa   Upload date: 2023-10-25   View Count: 35    Status: Public galleries    Type: Photo - 4864×3648 (17.7 Mpix)

YW2-VULValentinite Sb2O3 , Cervantite Sb3+Sb5+O4 , Stibiconite Sb3+Sb5+2O6(OH) , Stibnite Sb2S3

01466870017063761311737.jpg
Poggio Peloso, Civitella Paganico, Grosseto Province, Tuscany, Italy

Field of View: 70 mm

Lamellar pseudohexagonal dull yellow opaque Valentinite crystals (see at the high left of the image) with small yellow thin rayed aciculars Cervantite crystals (to the right of Valentinite, in the center of the image) and dirty yellow Stibiconite encrusting gray metallic Stibnite needles. Bought at Turin Mineral Fair, 2023.
Photo and collection Alessandro Cantamessa (#2425).
Photo ID: 1329682     Uploaded by: Alessandro Cantamessa   Upload date: 2023-10-24   View Count: 13    Status: Public galleries    Type: Photo - 3008×1692 (5.1 Mpix)
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