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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 galena, gismondine, gonnardite, hannebachite, hematite, and humite and more from places like Monte Somma, Vesuvius, Campania, Italy, Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy, Schellkopf, Eifel Volcanic Fields, Germany, Hannebacher Ley, Hannebach, Eifel Volcanic Fields, Germany, Eifel, North Rhine-Westphalia, Germany.

Galena

#PD44966
Locality
Monte Somma, Vesuvius, Campania, Italy 
Formula
PbS 
Availability
Sold
Size
4.5 x 3 x 2.5 cm - Miniature 
Tagged
sulfide  
Special Info
Antique Specimen 

1 to 4mm Galena cleavages in matrix.  This is old specimen with a Geologic Institute of the University of Amsterdam with label (see prov. tab).


Galena

Formula
PbS 
Crystal System
Isometric 
Crystal Habit
Euhedral Crystals, Massive - Granular, Massive 
Cleavage
Perfect, Perfect, Perfect 
Luster
Metallic 
Color
light lead gray, dark lead gray 
Streak
grayish black 
Class
Isometric - Hexoctahedral 
Fracture
Brittle 
Hardness
2.5 
Collection
Don Phillips Collection
Special Info
Antique Specimen
Mineralpedia
View Galena
On Dakota Matrix
Previously Sold Galena
On Dakota Matrix
Other Available Galena
WebMineral
View Galena
Mindat
View Galena
SOLD
Gismondine - PD48091
Gismondine - PD48091

Gismondine

#PD48091
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
Ca2(Si4Al4)O16·8H2
Availability
Sold
Size
6 x 6 x 5.5 cm - Sm Cabinet 

Chalky white Gismondine, a zeolite, in fine grained volcanic bomb.


Gismondine

Formula
Ca2(Si4Al4)O16·8H2
Crystal System
Monoclinic 
Crystal Habit
Pseudo Tetragonal, Globular 
Cleavage
Imperfect, None, None 
Luster
Vitreous (Glassy) 
Color
blue white, colorless, gray, white, red 
Streak
white 
Class
Monoclinic - Prismatic 
Fracture
Conchoidal 
Hardness
4-5 
Collection
Don Phillips Collection

Gonnardite

#PD50066
Locality
Schellkopf, Eifel Volcanic Fields, Germany 
Formula
(Na,Ca)2(Si,Al)5O10·3H2
Availability
Available
Price
$30.00
Size
8 x 3 x 4 cm - Sm Cabinet 

White ball shaped aggregates of Gonnardite to 2mm.


Gonnardite

Formula
(Na,Ca)2(Si,Al)5O10·3H2
Crystal System
Tetragonal 
Crystal Habit
Fibrous, Spherical 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
white 
Streak
white 
Class
Tetragonal - Scalenohedral 
Hardness
4-5 
Collection
Don Phillips Collection

Hannebachite

#PD50064
Locality
Hannebacher Ley, Hannebach, Eifel Volcanic Fields, Germany 
Formula
(CaSO3)2·H2
Availability
Sold
Size
2.2 x 1 x 1.2 cm - Thumbnail 
Special Info
Type Locality 

Elongated nearly colorless crystals in 3mm vug. Hannebachite is a fairly rare calcium sulfite found in only a handful of deposits worldwide but not in the USA. Some of the deposits are actually post-mine, slag dumps. This is the type locality.


Hannebachite

Formula
(CaSO3)2·H2
Crystal System
Orthorhombic 
Cleavage
Perfect, None, None 
Luster
Vitreous (Glassy) 
Color
colorless 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Hardness
3.5 
Collection
Don Phillips Collection
Special Info
Type Locality
SOLD
Hematite - PD49946
Hematite - PD49946

Hematite

#PD49946
Locality
Eifel, North Rhine-Westphalia, Germany 
Formula
Fe2O3 
Availability
Sold
Size
6.5 x 5 x 2.5 cm - Sm Cabinet 

Tiny discs of Hematite crystals covering face of punice rock.


Hematite

Formula
Fe2O3 
Crystal System
Trigonal 
Crystal Habit
Tabular, Blocky, Earthy 
Cleavage
None, None, None 
Luster
Metallic 
Color
reddish gray, black, blackish red 
Streak
reddish brown 
Class
Trigonal - Hexagonal Scalenohedral 
Fracture
Conchoidal 
Hardness
6.5 
Collection
Don Phillips Collection
Mineralpedia
View Hematite
On Dakota Matrix
Previously Sold Hematite
On Dakota Matrix
Other Available Hematite
WebMineral
View Hematite
Mindat
View Hematite

Humite

with Magnetite - #PD50046
Locality
Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy 
Formula
Mg7(SiO4)3(F,OH)2 
Availability
Sold
Size
7.5 x 6 x 3.5 cm - Sm Cabinet 
Special Info
Antique Specimen 

A good specimen with a 2mm black, octahedral crystal of Magnetite with nicely crystallized orange Humite. The matrix is green Phlogopite with nice crystals. Ex. Geological Institute of the University of Amsterdam.


Humite

Formula
Mg7(SiO4)3(F,OH)2 
Crystal System
Orthorhombic 
Cleavage
Poor, None, None 
Luster
Vitreous (Glassy) 
Color
brown, yellow, white, dark orange 
Streak
white 
Class
Orthorhombic - Dipyramidal 
Fracture
Conchoidal - Uneven 
Hardness
6-6.5 
Collection
Don Phillips Collection
Special Info
Antique Specimen
Mineralpedia
View Humite
On Dakota Matrix
Previously Sold Humite
On Dakota Matrix
Other Available Humite
WebMineral
View Humite
Mindat
View Humite

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