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Vesuvius & other Volcanic Minerals

Wednesday, 12 December 2018 04:00 PM

Introducing the "Vesuvius & other Volcanic Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including sulphur, tenorite, vesuvianite, and voltaite and more from places like Monte Somma, Vesuvius, Campania, Italy, Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy, Trocchia, Monte Somma, Vesuvius, Napoli, Campania, Italy.

Sulphur

#PD50071
Locality
Monte Somma, Vesuvius, Campania, Italy 
Formula
Availability
Sold
Size
7.5 x 6 x 7 cm - Sm Cabinet 
Tagged
native element  
Special Info
Antique Specimen 

Native Sulphur with good rich yellow color and luster covering face of lava rock. The specimen comes with a label from the Geological Institute - University of Amsterdam. The label states the specimen is from the eruption of 1855 (see prov. tab).


Sulphur

Collection
Don Phillips Collection
Special Info
Antique Specimen
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Previously Sold Sulphur
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Tenorite

#PD48089
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
CuO 
Availability
Sold
Size
5 x 3 x 2.5 cm - Miniature 
Tagged
copper  

Paper thin black plates of Tenorite in volcanic lava rock.


Tenorite

Formula
CuO 
Crystal System
Monoclinic 
Crystal Habit
Scaly, Earthy, Massive 
Cleavage
None, None, None 
Luster
Earthy (Dull) 
Color
black, steel gray 
Streak
black 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
3.5-4 
Collection
Don Phillips Collection
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On Dakota Matrix
Previously Sold Tenorite
On Dakota Matrix
Other Available Tenorite
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Vesuvianite

with Phlogopite - #PD48055
Locality
Trocchia, Monte Somma, Vesuvius, Napoli, Campania, Italy 
Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Availability
Sold
Size
5.5 x 6 x 4.5 cm - Sm Cabinet 
Special Info
Antique Specimen 
Special Info
Type Locality 

Columnar, striated very dark reddish brown crystals of Vesuviate from 8 to 14mm. The martrix is largely dark green Phlogopite. Ex. Geological Institute of the University of Amsterdam with label (prov).


Vesuvianite

Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Crystal System
Tetragonal 
Crystal Habit
Massive, Columnar, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
blue, brown, green, yellow, white 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
6.5 
Collection
Don Phillips Collection
Special Info
Antique Specimen
Special Info
Type Locality

Vesuvianite

with Grossular - #PD48062
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Availability
Sold
Size
8 x 5 x 4 cm - Sm Cabinet 
Special Info
Antique Specimen 
Special Info
Type Locality 

Red-brown Vesuvianite partial crystal with massive Grossular. Ex. Geological Institute of the University of Amsterdam with label (see prov. tab).


Vesuvianite

Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Crystal System
Tetragonal 
Crystal Habit
Massive, Columnar, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
blue, brown, green, yellow, white 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
6.5 
Collection
Don Phillips Collection
Special Info
Antique Specimen
Special Info
Type Locality

Vesuvianite

with Grossular - #PD48079
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Availability
Sold
Size
10 x 5 x 6 cm - Cabinet 
Special Info
Antique Specimen 
Special Info
Type Locality 

This is mostly a crystalline mass of Grossular. But the voids contain 3-6mm crystals of Vesuvianite. Ex. Geological Intitute - University of Amsterdam.


Vesuvianite

Formula
(Ca,Na)19(Al,Mg,Fe)13(SiO4)10(Si2O7)4(OH,F,O)10 
Crystal System
Tetragonal 
Crystal Habit
Massive, Columnar, Granular 
Cleavage
Indistinct, Indistinct, Indistinct 
Luster
Vitreous - Resinous 
Color
blue, brown, green, yellow, white 
Streak
white 
Class
Tetragonal - Dipyramidal 
Fracture
Sub Conchoidal 
Hardness
6.5 
Collection
Don Phillips Collection
Special Info
Antique Specimen
Special Info
Type Locality

Voltaite

#35140
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
K2Fe2+5Fe3+3Al(SO4)12·18H2
Availability
Available
Price
$175.00
Size
6.5 x 2 x 2 cm - Sm Cabinet 
Special Info
Antique Specimen 
Special Info
Type Locality 
Special Info
Type Material 

Antique vial dated 1926 filled with loose crystalline particles of various minerals with yellow Voltaite. The specimen is "part of type" specimen supplied by Dr. Georg Gebhard with his personal label (see prov tab). Type Locality.


Voltaite

Formula
K2Fe2+5Fe3+3Al(SO4)12·18H2
Crystal System
Isometric 
Crystal Habit
Massive - Granular, Crystalline - Fine 
Cleavage
None, None, None 
Luster
Silky 
Color
greenish black, dark green, olive green, black 
Streak
grayish green 
Class
Isometric - Hexoctahedral 
Fracture
Uneven 
Hardness
3-3.5 
Special Info
Antique Specimen
Special Info
Type Locality
Special Info
Type Material
On Dakota Matrix
Previously Sold Voltaite
On Dakota Matrix
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