Strengite

Origin: Arena Claim, Three Oak Gap, Mena, Polk Co., Arkansas, U.S.A.
Owner: Milton Speckels
Microscopic image, 6.3 x
 

Photo courtesy of: 

Milton Speckels

Photo-Atlas of Minerals

 

White strengite with pale greenish kidwellite
Origin: Field near the Hochstraße, Rengersdorf, Görlitz, Oberlausitz, Saxony, Germany
Picture size: 3.5 mm
Owner: Thomas Witzke
 

Photo courtesy of: 

Thomas Witzke

Institut für Mineralogie und Lagerstättenlehre
Aachen, Germany

 

Fanning aggregates of white, colourless to pale rosa crystals ± oxyberaunite (not a valid mineral species), cacoxenite, variscite on matrix
Origin: Grube Rotläufchen, Walgirmes, Hessen, Germany
Sample size: micromount
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

  
Large specimen showing off rich purple spherical aggregates of strengite (to 8 mm), intermixed with velvety green spherical aggregates of rockbridgeite and brighter, dark-green sprays of acicular crystals that are perhaps pharmacosiderite or olivenite.
Origin: Leveäniemi Iron mine, Svappavaara, Lappland, Sweden
Sample size: 12.0 x 7.2 x 6.1 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Strengite on jet black robertsite in small vug
Origin: Elizabeth R mine, San Diego Co., California, United States
Ex. DeVito Collection
Sample size: 6 x 2.5 x 3 cm
 
  
  
  
3 mm light to dark purple (this strengite has colour changing ability depending on the light source) spherical crystal aggregates on the right side and with bladed radial aggregates to 1mm on the left side. On the edge are golden radial, fibrous groups of cacoxenite.
Origin: Coon Creek mine, Polk Co., Arkansas, United States
Ex. Kidwell collection
Sample size: 8 x 6 x 4 cm
 

Photo courtesy of: 

Tom Loomis

Dakota Matrix Minerals

 

  
Origin: Indian Mountain, Cherokee County, Alabama, U.S.A.
Ex. Mike Groben, ex. Dr. Henry Barwood
Sample size: 7.7 x 5 x 3 cm
 

Photo courtesy of: 

John Veevaert, Trinity Mineral Co

Trinityminerals.com

 

Origin: Phosphate Hill, Mansfield, Victoria, Australia
Sample size: unknown
Sample owner: Steve Sorrell
 

Photo courtesy of: 

Steve Sorrell

Crocoite.com

 

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