THE MINERAL WAVELLITE

  • Chemistry: Al3(PO4)2(OH)3-(H2O)5, Hydrated Aluminum Phosphate Hydroxide
  • Class: Phosphates
  • Uses: only as mineral specimens
  • Specimens

Wavellite is a mineral that demonstrates the classic radiating globule crystal habit. In fact, you could say that wavellite is the type mineral for this habit. The habit produces a unique effect when the globules are imbedded in limestone and chert. If the rock is fractured and some of the globules are cleaved through, then a nice radial cluster is seen. The radial cluster will then reflect light to produce a sparkling pinwheel effect. Although broken mineral specimens are generally not valued by collectors, the radial play of light can be rather pretty and makes for interesting specimens. Although, a serious collector might not admit it, the more valuable specimens are those that are predominantly pristine, uncleaved clusters with at least a few cleaved globules to demonstrate the light play.

PHYSICAL CHARACTERISTICS:

  • Color is characteristically green but also white, colorless, yellow and brown.
  • Luster is vitreous.
  • Transparency crystals are transparent to translucent.
  • Crystal System is orthorhombic; 2/m 2/m 2/m
  • Crystal Habit is almost exclusively radiating acicular crystals forming globules or botryoidal masses.
  • Cleavage is perfect in two directions.
  • Fracture is uneven.
  • Hardness is 3.5 - 4.
  • Specific Gravity is approximately 2.3+ (light even for translucent minerals)
  • Streak is white.
  • Associated Minerals are quartz, micas, turquoise and limonite.
  • Other Characteristics: surface of globules often have minute crystals giving off tiny sparkles.
  • Notable Occurances include Arkansas and Pennsylvania, USA; Bolivia and England.
  • Best Field Indicators are crystal habit, green color and softness.
This Site Awarded
Available WAVELLITE specimens:
see this List of ALL specimens including SOLD ones

 

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