Vote for your favorite mineral in #MinCup26! - Sphalerite vs. Anorthite
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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Phosgenite from
Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy


09653670017271925796658.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
02107320017271925869904.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
06814940017272002006698.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
04864560017272002027351.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
08547970017867018023202.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
02107320017271925869904.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
06814940017272002006698.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
04864560017272002027351.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
00637890017867018032125.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
00783800017272002051996.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
06814940017272002006698.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
04864560017272002027351.jpg
Phosgenite

Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
Locality type:Mine
Classification
Species:Phosgenite
Formula:Pb2CO3Cl2
Chemical Analyses:
Oxide wt%:
1
PbO81.65 %
Na2O0.06 %
K2O0.02 %
CaO0.01 %
SiO20.02 %
CO28.15 %
Cl13.05 %
-O=Cl2-2.94 %
Total:100.02 %
Sample references:
1 -
Gatta, G. Diego; Guastella, Giorgio; Pipitone, Candida; Capelli, Silvia C.; Ienco, Andrea; Costantino, Ferdinando (2026) Reinvestigation of the crystal chemistry of phosgenite, Pb2(CO3)Cl2. Mineralogical Magazine, 90 (2). p.408-416. doi:10.1180/mgm.2025.10131
Comments:Great specimen in Folch Collection 11.5 x 11 cm[see Bancroft, Peter (1973) The World's Finest Minerals and Crystals].
Quality for species:Excellent - world class for species or very significant. (!!)
Significance:Classic locality for this mineral (see references.)
Abundance at site:Rare
Confirmation
Validity:Believed Valid
Associated Minerals Based on Photo Data:
Galena50
Anglesite10
Cerussite10
Calcite2
Lanarkite1
Quartz1
Data
Mineral Data:Click here to view Phosgenite data
Locality Data:Click here to view Monteponi Mine, Iglesias, South Sardinia Province, Sardinia, Italy
Photo GalleryView Gallery (183 photos)
Data Identifiers
Mindat Occurrence Record ID:8645
Long-form Identifier:1:3:8645:5
GUID (UUID V4):0
Nearest other occurrences of Phosgenite
1.8km (1.1 miles) ⓘSan Giovanni Mine, Bindua, Iglesias, South Sardinia Province, Sardinia, Italy
5.3km (3.3 miles) ⓘSan Giovanneddu Mine (S'Ega Porceddu), Gonnesa, South Sardinia Province, Sardinia, Italy
5.7km (3.5 miles) ⓘNebida mine, Nebida, Iglesias, South Sardinia Province, Sardinia, Italy
6.8km (4.2 miles) ⓘSan Benedetto Mine, Iglesias, South Sardinia Province, Sardinia, Italy
10.4km (6.5 miles) ⓘSu Corovau Mine, Domusnovas, South Sardinia Province, Sardinia, Italy
11.0km (6.8 miles) ⓘTiny-Arenas Mine, Fluminimaggiore, South Sardinia Province, Sardinia, Italy
12.5km (7.8 miles) ⓘPinn'e Perda Stope, Tiny-Arenas Mine, Fluminimaggiore, South Sardinia Province, Sardinia, Italy
17.9km (11.1 miles) ⓘPira Inferida, Fenugu Sibiri Mine, Gonnosfanadiga, South Sardinia Province, Sardinia, Italy
29.0km (18.0 miles) ⓘMontevecchio Mines, Guspini, South Sardinia Province, Sardinia, Italy
92.3km (57.4 miles) ⓘBaccu Locci Mine, Villaputzu, South Sardinia Province, Sardinia, Italy
References
Goldschmidt, V. (1893) Phosgenit von Monteponi. Zeitschrift für Kristallographie, Mineralogie und Petrographie, Leipzig: 21: 321-328.
Koch, G. (1929) Phosgenit von Monteponi (Sardinien). Neues Jahrbuch für Mineralogie, Geologie und Paläontologie, Beilagen-Band, 59: 97.
Palache, Charles; Berman, Harry; Frondel, Clifford (1951) The System of Mineralogy (7th ed.) Vol. 2 - Halides, Nitrates, Borates, Carbonates, Sulfates, Phosphates, Arsenates, Tungstates, Molybdates, Etc. John Wiley and Sons.
Bancroft, Peter (1973) The World's Finest Minerals and Crystals.tav. XXXVI
De Michele, V. (1974) Guida mineralogica d'Italia. Istituto Geografico De Agostini.
 
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