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Both zinc ore Sphalerite and calcium plagioclase feldspar Anorthite have perfect cleavage that will split cleanly if you hit them with a hammer, but only one can claim a larger split of your votes!
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Phlogopite from
San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy


09064930017271925835191.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
08029350017866628207518.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
04672110017272005378177.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
08989910017272005383196.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
06392560017362565099192.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
08029350017866628207518.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
05114510017368965301231.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
08989910017272005383196.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
09064930017271925835191.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
03714670017272005418743.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
04672110017272005378177.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
08989910017272005383196.jpg
Phlogopite

San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
Locality type:Quarry
Classification
Species:Phlogopite
Formula:KMg3(AlSi3O10)(OH)2
Comments:According to Campostrini & Russo (2022), it is the most common species of the Somma-Vesuvius biotites.
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Humite Group6
Magnetite5
Vesuvianite5
Spinel4
Diopside4
Cuspidine4
Baddeleyite3
Calcite3
Britholite-(Ce)2
Clinohumite2
Perovskite1
Forsterite1
Anorthite1
Sanidine1
Zircon1
Humite1
Norbergite1
Sphalerite1
Data
Mineral Data:Click here to view Phlogopite data
Locality Data:Click here to view San Vito Quarry, San Vito, Ercolano, Metropolitan City of Naples, Campania, Italy
Photo GalleryView Gallery (34 photos)
Data Identifiers
Mindat Occurrence Record ID:479646
Long-form Identifier:1:3:479646:6
GUID (UUID V4):0
Nearest other occurrences of Phlogopite
0.4km (0.3 miles) ⓘLe Novelle Quarry, Ercolano, Metropolitan City of Naples, Campania, Italy
1.6km (1.0 miles) ⓘPollena quarries, Pollena Trocchia, Metropolitan City of Naples, Campania, Italy
2.6km (1.6 miles) ⓘBelvedere (Belvedere Vesuvio), Ercolano, Metropolitan City of Naples, Campania, Italy
5.7km (3.5 miles) ⓘCamaldoli della Torre, Torre del Greco, Metropolitan City of Naples, Campania, Italy
6.5km (4.1 miles) ⓘLagno Macedonia, Somma Vesuviana, Metropolitan City of Naples, Campania, Italy
8.1km (5.0 miles) ⓘVitiello Quarry (Cava Vitiello), Terzigno, Metropolitan City of Naples, Campania, Italy
8.8km (5.5 miles) ⓘVilla Inglese quarries, Torre del Greco, Metropolitan City of Naples, Campania, Italy
26.8km (16.6 miles) ⓘMofete geothermal field, Bacoli, Metropolitan City of Naples, Campania, Italy
62.1km (38.6 miles) ⓘRoccamonfina Volcanic Complex, Caserta, Campania, Italy
References
Russo, M., Punzo, I. (2004): I minerali del Somma-Vesuvio, AMI
Balassone, Giuseppina, Scordari, Fernando, Lacalamita, Maria, Schingaro, Emanuela, Mormone, Angela, Piochi, Monica, Petti, Carmela, Mondillo, Nicola (2013) Trioctahedral micas in xenolithic ejecta from recent volcanism of the Somma-Vesuvius (Italy): Crystal chemistry and genetic inferences. Lithos, 160. 84-97 doi:10.1016/j.lithos.2012.12.004
Russo, M., Campostrini, I. (2022) Elenco delle specie minerali del "Somma-Vesuvio". Miscellanea INGV: 65: 1-33.
 
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