Matulaite

  
Ex. Eaton Collection
  
Micro crystals to 0.25 mm with pearly luster in aggregagate covering much of face associated with orange cacoxenite. Ex. Weber collection
Origin: Bachman mine, Hellertown, Pennsylvania, United States (type locality)
Sample size: 2 x 1 x 1 cm (top), 3.5 x 2.5 x 1.5cm (bottom)
 
  
Pearly white spheroidal crystals to about 0.3 mm in bunches within a 2 x 1 cm vug
Origin: General Trimble's Mine, East Whiteland Twp., Chester Co, Pennsylvannia, United States
Ex. Weber Collection & from or signed by Marge Matula. 1985
Sample size: 3 x 1.5 x 1.5 cm
 
  
White, pearly, spheroidal crystals, which in cross-section are shown as thin platy crystals in fan-like, full and partial radial patterns to about 0.75 mm across. Often single plates give sericitic-like reflections.
  
Ex. Polak collection
Origin: Bachman mine, Hellertown, Northampton Co., Pennsylvania, United States (type locality)
Sample size: 5 x 4 x 2 cm (top), 3 x 3 x 2 cm (bottom)
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

White pearly rosettes of bladed crystals on other phosphates
Origin: Bachman Mine, Hellertown, Pennsylvania, USA
Sample size: 2 x 2.5 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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