Rare Mineral Specimens - search page
- Availability
- Available
- Price
- $195.00
- Locality
- Tolbachik Volcano, Kamchatka, Russia
- Formula
- NaCaMg3(AsO4)3
- Size
- 6 x 4 x 3.5 cm - Sm Cabinet
- Tagged
- arsenate
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
- Special Info
- Type & Only Locality
- Special Info
- Author's Material
Calciojohillerite is a greenish to yellowish to almost colorless well-shaped, terminated crystals (about 1 mm) combined in clusters / crusts on basalt scoria altered by fumarolic gas. The specimen is very rich. It is one of the few study specimens from Igor Pekov's collection used to characterize the new mineral. It is not yet published but was approved in 2016.
A more detailed locality is: Arsenatnaya fumarole, Second scoria cone of the Northern Breakthrough of the Great Tolbachik Fissure Eruption, Tolbachik volcano, Kamchatka, Russia.
- Availability
- Available
- Price
- $95.00
- Locality
- Mt. Pyalkimpor, Lovozero Massif, Kola Peninsula, Russia
- Formula
- (Na,☐)2Ca(Ti,Mg,Nb)4[Si2O7]2O2(OH,O)2(H2O)4
- Size
- 3.5 x 1.8 x 2 cm - Miniature
- Special Info
- Type Locality
- Special Info
- XRD Confirmed
- Special Info
- EDS Confirmed
Calciomurmanite is Na-Ca ordered analogue of murmanite. Murmanite does not contain calcium, only Na, by strict definition. Otherwise, you cannot tell these two minerals apart visually. Calciomurmanite crystals occur as thin plates and somewhat micaceous. The cleavage surfaces have a mother of pearl luster. This specimen was verified by Dr. Igor Pekov and was part of his study to define the mineral for publication. It is an approved IMA mineral, although not yet published.
- Availability
- Available
- Price
- $35.00
- Locality
- near Cuya, Camarones Valley, Arica prov., Chile
- Formula
- [Fe3+(H2O)2(PO3OH)]2(SO4)1-2H2O
- Size
- 4 x 3 x 3.5 cm - Miniature
Lilac platy crystals, some free standing, but minute in small vugs and crystalline veins.
- Availability
- Available
- Price
- $185.00
- Featured
- Featured in Special Editions
- Locality
- La Fossa crater, Vulcano Island, Messina prov., Sicily, Italy
- Formula
- Pb8Bi10S23
- Size
- 5.5 x 2 x 2 cm - Sm Cabinet
- Tagged
- sulfide
- Special Info
- Antique Specimen
- Special Info
- Type Locality
Cannizzarite is sulfide of lead and bismuth and found in volcanic fumaroles at depths reaching 510 degrees F. It also occurs in many other geological environments including vein quartz with gold and sulfide veins. Identifican of the mineral dates back to 1924 and is named after the Italian scientist Stanislao Cannizzaro, who worked on the calculations of atomic weights with what was called the "Cannizzaro reaction". Cannizzarite was thought to be a variety of Galenobismuthite, a closely related mineral.
As you can see the vial dated 1927, not long after the discovery. This is the type locality.
- Availability
- Sold
- Locality
- Mrak mine, Converse Co., Wyoming, United States
- Formula
- K2(UO2)2(VO4)2·3H2O
- Size
- 4.5 x 2.5 x 2 cm - Miniature
- Tagged
- vanadium
Yellow powdery Carnotite in sandstone.
- Availability
- Sold
- Featured
- Featured in Special Editions
- Locality
- Mt. Vesuvius, Somma Complex, Napoli, Campania, Italy
- Formula
- CuSO4
- 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.
