THE MINERAL DANBURITE



Danburite is not a well-known mineral but is growing in popularity. With crystals similar to topaz, danburite offers a unique opportunity for a collector who likes perfectly transparent crystal clusters. People who admire clear quartz will like the different look of danburite. Its diamond-shaped cross-section and wedge like termination is a contrast to quartz's hexagonal prisms and pyramidal terminations. Danburite's original locality is now buried under the city of Danbury, Connecticut.

PHYSICAL CHARACTERISTICS:

  • Color is almost always clear or white, but also can be shades of yellow, pink and brown.
  • Luster is vitreous.
  • Transparency: Crystals are transparent to translucent.
  • Crystal System is orthorhombic; 2/m 2/m 2/m
  • Crystal Habits include generally prismatic crystals with a diamond-shaped cross-section. The termination is a steeply slanted dome producing a wedge look. Crystals can be rather thin to almost acicular or up to a foot long and several inches across.
  • Cleavage is poor in one direction, basal.
  • Fracture is uneven to conchoidal.
  • Hardness is 7 - 7.5
  • Specific Gravity is approximately 3.0 (average)
  • Streak is white or colorless.
  • Associated Minerals are quartz, feldspars, cassiterite, dolomite, corundum variety ruby, and fluorite.
  • Notable Occurrences include Danbury, Connecticut and Russell, New York, USA; Charcas, San Luis Potosi, Mexico; Kyushu Is., Japan; Mogok, Burma and Uri, Switzerland.
  • Best Field Indicators are crystal habit, poor cleavage, hardness and associations.
This Site Awarded
Available DANBURITE specimens:
DANBURITE specimen DAN-24
$ 53.00 -20% = $ 42.40
Dims: 1.57x1.23x0.74in (4.00x3.12x1.88cm) .... Wt: 1.02oz (29.0g) .... Loc: Charcas, San Luis Potosi, Mexico
This nice danburite crystal seems unusual to me in one respect: it has a surface inclusion which appears to be a metal sulfide of some kind, but there is not enough crystal form for me to make a guess as to which one. The inclusion has a golden hue on the fresh surface, and a black tarnish on the rest. The danburite is a good crystal with a moderate level of internal fractures.
no photo
DAN-24
$ 42.40
no photo
DANBURITE specimen DAN-26
$ 38.00 -20% = $ 30.40
Dims: 1.69x0.81x0.41in (4.28x2.06x1.03cm) .... Wt: 0.49oz (14.0g) .... Loc: Charcas, San luis Potosi, Mexico
While mostly consisting of two intergrown danburite crystals, there are a number of tiny ones as well, adding interest and sparkle. The tips of the crystals show attachment point - they are not perfect.
no photo
DAN-26
$ 30.40
no photo
DANBURITE specimen DAN-27
$ 30.00 -20% = $ 24.00
Dims: 1.31x0.65x0.33in (3.32x1.66x0.84cm) .... Wt: 0.250oz (7.00g) .... Loc: Charcas, San luis Potosi, Mexico
This asymmetrical danburite crystal is completely colorless and shows excellent clarity except for a number of internal fractures.
no photo
DAN-27
$ 24.00
no photo
see this List of ALL specimens including SOLD ones
 

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