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Fine Mineral Specimens Monteponi Phosgenites

Thursday, 30 April 2015 01:00 AM

The Monteponi mine of Sardinia, Italy sets the standard for fine Phospgenites. We aquired several of these from Renato Pagano, who recently published an article in the Min. Record (Nov/Dec 2014).

Phosgenite

#41207
Locality
Monteponi mine, Iglesias, Sardinia, Italy 
Formula
Pb2CO3Cl2 
Availability
Sold
Notes
Discounts/Promos do NOT apply to this item
Size
4 x 3.5 x 2.5 cm - Miniature 
Tagged
carbonate  
Special Info
Fluorescent 

This is the largest and perhaps best Phosgenite of the group. It is complete on all sides with pinacoidal (two-flat) terminations. One end is terminated but also shows skeletal growth. The prism faces are deeply striated with perhaps the subsequent growth of parallel crystals. The color is a nice light amber, a little lighter than the photo's depict. As with all of these Phosgentites, this one was obtained from Renato Pagano, one of the authors of the article in the Mineralogical Record (v45 nov/Dec) on the Monteponi mine. Very fluorescent orange-yellow under longwave UV (as shown).


Phosgenite

Formula
Pb2CO3Cl2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular, Massive - Granular 
Cleavage
Good, Good, Indistinct 
Luster
Adamantine 
Color
white, gray, brownish yellow, greenish white, pinkish white 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Sectile 
Hardness
2.5-3 
Special Info
Fluorescent

Phosgenite

#41208
Locality
Monteponi mine, Iglesias, Sardinia, Italy 
Formula
Pb2CO3Cl2 
Availability
Available
Price
$1,750.00
Notes
Discounts/Promos do NOT apply to this item
Size
3 x 3 x 1.5 cm - Thumbnail 
Tagged
carbonate  
Special Info
Fluorescent 

This Phosgenite is a short prismatic complete crystal with a flat termination. The prism faces are mildly striated and the color is a light brown to colorless white. The luster is good. No damage. Mounted on acrylic. 

Monteponi is the premier world locality as Pagano points out in his MR (v45 Nov/Dec) article. There is no other locality which exhibits the color, luster and crystal size like Sardinian Phosgenite. Yellow-orange fluorescence under longwave UV (as shown).


Phosgenite

Formula
Pb2CO3Cl2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular, Massive - Granular 
Cleavage
Good, Good, Indistinct 
Luster
Adamantine 
Color
white, gray, brownish yellow, greenish white, pinkish white 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Sectile 
Hardness
2.5-3 
Special Info
Fluorescent

Phosgenite

#41209
Locality
Monteponi mine, Iglesias, Sardinia, Italy 
Formula
Pb2CO3Cl2 
Availability
Sold
Notes
Discounts/Promos do NOT apply to this item
Size
3 x 2.5 x 1.5 cm - Thumbnail 
Tagged
carbonate  
Special Info
Fluorescent 

A light brown to white or colorless complete crystal exhibiting a flat termination and nearly flat, subparallel prism faces. It's an excellent specimen with good luster and a peculiar, offset cyrstal at the base. Strongly fluorescent yellow under longwave UV as shown. Mounted on acrylic.

Comes with (as all of these do) a Renato Pegano label (prov. tab). As Pagano points points out Phosgenite from Monteponi was first found in about 1874. 

Ex. Renato Pagano


Phosgenite

Formula
Pb2CO3Cl2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular, Massive - Granular 
Cleavage
Good, Good, Indistinct 
Luster
Adamantine 
Color
white, gray, brownish yellow, greenish white, pinkish white 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Sectile 
Hardness
2.5-3 
Special Info
Fluorescent

Phosgenite

#41216
Locality
Monteponi mine, Iglesias, Sardinia, Italy 
Formula
Pb2CO3Cl2 
Availability
Sold
Notes
Discounts/Promos do NOT apply to this item
Size
2 x 1.5 x 1 cm - Thumbnail 
Tagged
carbonate  
Special Info
Fluorescent 

A short prismatic crystal, incomplete since one side is loaded with micro crystals of Phosgenite. Fluorescent yellow.

Ex- Renato Pagano collection. 


Phosgenite

Formula
Pb2CO3Cl2 
Crystal System
Tetragonal 
Crystal Habit
Prismatic, Tabular, Massive - Granular 
Cleavage
Good, Good, Indistinct 
Luster
Adamantine 
Color
white, gray, brownish yellow, greenish white, pinkish white 
Streak
white 
Class
Tetragonal - Ditetragonal Dipyramidal 
Fracture
Sectile 
Hardness
2.5-3 
Special Info
Fluorescent

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