Ferrohornblende and Magnesiohornblende

Origin: Lukov, Bohemia, Czech Republic
Picture height: largest crystal 25 mm
Sample owner: W.R. Moorer
 
 

Photo courtesy of: 

Pieter Stemvers, Leusden, Netherlands

email: stemvers@hetnet.nl

 

  
 
Ferrohornblende
Origin: Monte Somma (Vesuvius), Campania, Italy
Owner: Lou Perloff
Microscopic image
 
Ferrohornblende
Origin: Bellerberg quarry, Laachersee, Rheinland-Pfalz, Germany
Owner: Lou Perloff
Microscopic image
 

Photo courtesy of: 

Lou Perloff

Photo-Atlas of Minerals

 

Origin: near Bilin, Bohemia, Czech Republic
Sample size: 1.3 x 1.7 x 1.5 cm
 
        
Origin: Kragero, Telemark, Norway
Sample size: 12.2 x 3.3 x 1.8 cm
 

Photo courtesy of: 

Rob Lavinsky

The Arkenstone

 

  
Ferrohornblende
Origin: Eas a Bradain, Luib, Isle of Skye, Inverness-shire, North West Highlands, Scotland, UK
Sample size: 0.7 mm prismatic crystal (left), 2 mm prismatic crystal, with whiteish crystals of titanite (right)
Owner: Steve Rust
 

Photo courtesy of: 

Steve Rust

 

Black ferrohornblende crystals and crystal fragments in matrix
Origin: Near Gem Mine, San Benito Co., California, U.S.A.
Sample size: 2.5 x 3.5 cm
 

Photo courtesy of: 

Diederik Visser

Diederik Visser Minerals & Petrological Services

 

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