David K. Joyce

Callaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada

Here is an unusual mineral, callaghanite, a rare hydrous copper, magnesium carbonate-sulphate. The crystals look sort of like deep blue anatase crystals! Associated minerals on these specimens are hemispherical aggregates of hydromagnesite and bladed brucite crystals. Type locality. They are small but very sharp crystals!

All prices in Canadian dollars. For payment in US$, deduct 19% or multiply by 0.81.

Click on any of the following thumbnails to view a larger image of the specimen.

Callaghanite, HydromagnesiteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20952
  • Callaghanite, Hydromagnesite
  • 7.3x4.2x2.6 cm
  • Largest Crystal Size: micro
  • $65.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Lots of deep-blue, well terminated, striated, crystals of this rare mineral. The crystals are partially embedded in powdery, pure white hydromagnesite which make an excellent colour contrast. Very nice specimen from the type locality.
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20953
  • Callaghanite, Hydromagnesite, Brucite
  • 8.0x5.0x3.8 cm
  • Largest Crystal Size: micro
  • $35.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • This specimen has a very narrow seam exposed that contains flattened callaghanite and brucite crystals. Good reference specimen.
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20954
  • Callaghanite, Hydromagnesite, Brucite
  • 8.0x5.6x5,7 cm
  • Largest Crystal Size: micro
  • $45.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, Canada
  • There are a number of seams of solid callaghanite cutting through parts of this matrix. One is exposed and shows sharp, flattened crystals of callaghanite and brucite, along with the ubiquitous hemispheres of hydromagnesite. Nice!
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20955
  • Callaghanite, Hydromagnesite, Brucite
  • 4.7x4.2x1.5 cm
  • Largest Crystal Size: micro
  • $65.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Some very sharp, deep-blue crystals of callaghanite in openings in seams of callaghanite and brucite. Excellent!
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20956
  • Callaghanite, Hydromagnesite, Brucite
  • 6.3x3.2x3.2 cm
  • Largest Crystal Size: micro
  • $55.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • A few very good, sharp, callaghanite crystals on this specimen. The piece has a number of veinlets of deep blue callaghanite cut through the matrix here and there. Some parts ore open and crystal faces and whole crystals are exposed.
CallaghaniteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20958
  • Callaghanite
  • 6.0x6.1x3.0 cm
  • Largest Crystal Size: micro
  • $55.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Exposed seams of callaghanite show sharp, deep blue crystals of callaghanite. Rich!
Callaghanite, HydromagnesiteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20959
  • Callaghanite, Hydromagnesite
  • 4.7x4.5x3.1 cm
  • Largest Crystal Size: micro
  • $60.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Lots of very sharp, textbook callaghanite crystals are scattered around one face of this specimen. Really nice crystals.
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20960
  • Callaghanite, Hydromagnesite, Brucite
  • 4.4x4.3x2.2 cm
  • Largest Crystal Size: micro
  • $75.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Lots of sharp, deep blue crystals of callaghanite peek out here and there from a blanket of hemispheres of hydromagnesite. Excellent from the type locality!
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20962
  • Callaghanite, Hydromagnesite, Brucite
  • 3.0x2.4x1.6 cm
  • Largest Crystal Size: micro
  • $45.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Many sharp, deep-blue, well terminated crystals of callaghanite associated with spheres of white hydromagnesite on this specimen. The callaghanite crystals look very much like deep-blue anatase crystals! Aldo some good brucite crystals in the well crystallized area. Nice!
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20964
  • Callaghanite, Hydromagnesite, Brucite
  • 7.4x1.8x4.7 cm
  • Largest Crystal Size: micro
  • $85.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • Lots of excellent sharp, dadk-blue callaghanite crystals, white hydromagnesite spheres and bladed brucite crystals on this specimen! Very photogenic.
Callaghanite, Hydromagnesite, BruciteCallaghanite, etc., Sierra Magnesite Mine, Gabbs, Nye County, Nevada
  • Item #20966
  • Callaghanite, Hydromagnesite, Brucite
  • 6.8x4.5x3.0 cm
  • Largest Crystal Size: micro
  • $65.00
  • Sierra Magnesite Mine
  • Gabbs, Nye County
    Nevada, USA
  • An area on the top of this specimen has super callaghanite crystals associated with white hemispheres of hydromagnesite and colourless bladed crystals of brucite. Excellent example of these minerals!