Recently Released Special Editions
Vesuvius & other Volcanic Minerals
Introducing the "Vesuvius & other Volcanic Minerals" gallery which is part of our Special Edition galleries. This gallery contains mineral specimens for sale including anorthite, aphthitalite, augite, and chalcocyanite and more from places like Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy, Sacrofano, Roma, Lazio, Italy, Emmelberg, Üdersdorf, Eifel Volcanic Fields, Germany.
Anorthite
- Sold
- Add to Favorites
- Locality
- Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy
- Formula
- CaAl2Si2O8
- Availability
- Sold
- Size
- 6 x 5 x 6 cm - Sm Cabinet
- Special Info
- Antique Specimen
Colorless Anorthite crystals tightly grown in a 2cm vug. The matrix is mostly Augite with black Spinel octahedral crystals throughout. Ex. Geological Institute - University of Amsterdam.
Anorthite
- Formula
- CaAl2Si2O8
- Crystal System
- Triclinic
- Crystal Habit
- Granular, Euhedral Crystals, Striated
- Cleavage
- Perfect, Good, None
- Luster
- Vitreous (Glassy)
- Color
- colorless, gray, white, red, reddish gray
- Streak
- white
- Class
- Triclinic - Pinacoidal
- Fracture
- Uneven
- Hardness
- 6
- Collection
- Don Phillips Collection
- Special Info
- Antique Specimen
- Mineralpedia
- View Anorthite
- On Dakota Matrix
- Previously Sold Anorthite
- On Dakota Matrix
- Other Available Anorthite
- WebMineral
- View Anorthite
- Mindat
- View Anorthite
Anorthite
- Sold
- Add to Favorites
- Locality
- Sacrofano, Roma, Lazio, Italy
- Formula
- CaAl2Si2O8
- Availability
- Sold
- Size
- 4.5 x 4.5 x 2.5 cm - Miniature
Nearly transparent and colorless 2mm crystals in tuff matrix. Anorthite is a calcium feldspar of the Albite-Anorthite series.
Anorthite
- Formula
- CaAl2Si2O8
- Crystal System
- Triclinic
- Crystal Habit
- Granular, Euhedral Crystals, Striated
- Cleavage
- Perfect, Good, None
- Luster
- Vitreous (Glassy)
- Color
- colorless, gray, white, red, reddish gray
- Streak
- white
- Class
- Triclinic - Pinacoidal
- Fracture
- Uneven
- Hardness
- 6
- Collection
- Don Phillips Collection
- Mineralpedia
- View Anorthite
- On Dakota Matrix
- Previously Sold Anorthite
- On Dakota Matrix
- Other Available Anorthite
- WebMineral
- View Anorthite
- Mindat
- View Anorthite
Aphthitalite
- Sold
- Add to Favorites
- Locality
- Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy
- Formula
- K3Na(SO4)2
- Availability
- Sold
- Size
- 5.5 x 1.5 x 1.5 cm - Sm Cabinet
- Special Info
- Antique Specimen
Vial dated 1870 with light blue crusts from volcanic fumaroles. In the book "Mount Vesuvius" J. Logan Lobley states "At Vesuvius it is (aphthitalite) sublimed in delicate white crystallisations on the lava about the fumaroles and in the crater. It was
found both on the lava of 1868 and on that of 1872. Aphthitalite occurs at other volcanoes also." Aphthitalite was named in 1832 by Beudant. It is actually stable in air as the name implies, a derivative of the Greek word "unalterable". Aphthitalite was originally described from Vesuvius found as delicate crystallizations and in masses an inch or more thick (Dana 6th ed.). The material inside the vial can be seen as excellent thin tabular crystals.
Aphthitalite
- Formula
- K3Na(SO4)2
- Crystal System
- Trigonal
- Crystal Habit
- Massive, Encrustations
- Cleavage
- Good, None, None
- Luster
- Vitreous - Resinous
- Color
- blue, colorless, green, gray, gray blue
- Streak
- white
- Class
- Trigonal - Hexagonal Scalenohedral
- Fracture
- Brittle - Conchoidal
- Hardness
- 3
- Collection
- Don Phillips Collection
- Special Info
- Antique Specimen
- On Dakota Matrix
- Previously Sold Aphthitalite
- On Dakota Matrix
- Other Available Aphthitalite
- WebMineral
- View Aphthitalite
- Mindat
- View Aphthitalite
Augite
- Sold
- Add to Favorites
- Locality
- Emmelberg, Üdersdorf, Eifel Volcanic Fields, Germany
- Formula
- (Ca,Mg,Fe)2(Si,Al)2O6
- Availability
- Sold
- Size
- 10 x 6 x 4 cm - Cabinet
This is a cool specimen with alot of greet micro crystals of mostly Augite, but also tiny red Pseuadobrookite crystals, Hematite and Tridymite.
Augite
- Formula
- (Ca,Mg,Fe)2(Si,Al)2O6
- Crystal System
- Monoclinic
- Crystal Habit
- Massive - Fibrous, Columnar, Granular
- Cleavage
- Perfect, Indistinct, None
- Luster
- Vitreous - Resinous
- Color
- brown green, green, light brown, dark brown, black
- Streak
- greenish gray
- Class
- Monoclinic - Prismatic
- Fracture
- Brittle - Conchoidal
- Hardness
- 5-6.5
- Collection
- Don Phillips Collection
- Mineralpedia
- View Augite
- On Dakota Matrix
- Previously Sold Augite
- On Dakota Matrix
- Other Available Augite
- WebMineral
- View Augite
- Mindat
- View Augite
Chalcocyanite
- Sold
- Add to Favorites
- Locality
- Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy
- Formula
- CuSO4
- Availability
- Sold
- Size
- 3.5 x 0.7 x 0.7 cm - Miniature
- Tagged
- copper
Chalcocyanite is very hygroscopic mineral, meaning it loves to absorb water from the atmosphere, and thus the sealed in a vial. The substance powdery white, but the mineral can be light blue. In fact, the name Chalcocyanite is derived from the Greek word for blue. Chalcocyanite is a sublimate product found near volcanic fumaroles.
Chalcocyanite
- Formula
- CuSO4
- Crystal System
- Orthorhombic
- Luster
- Vitreous (Glassy)
- Color
- blue, brown, green, yellow, yellow brown
- Streak
- white
- Class
- Orthorhombic - Dipyramidal
- Hardness
- 3.5
- Collection
- Don Phillips Collection
- On Dakota Matrix
- Previously Sold Chalcocyanite
- On Dakota Matrix
- Other Available Chalcocyanite
- WebMineral
- View Chalcocyanite
- Mindat
- View Chalcocyanite
