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Rhönite Hornblende & Hematite

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SKY598324

Rhönite Hornblende & Hematite

Rare Mineral

Description Tabs

Description
Locality: 
Nickenicher Weinberg, Nickenich, Andernach, Mayen-Koblenz, Rhineland-Palatinate, Germany
Class: 
Crystals on Matrix
Size Range: 
Small miniature (3-4.5 cm)
Size: 
3 × 2.7 × 1.7 cm
Description

Rhönite is a rare and nice mineral from Eifel that occurs as small orange-brown crystals associated to black hematite and yellow hornblende in a nice contrast with the matrix. Very nice under the microscope !

Mineral Data
What's on the rock

Rhönite

Formula: 
Ca2(Mg,Fe2+,Fe3+,Ti)6[O2|(Si,Al)6O18]
Strunz: 
9.DH.40
Hardness: 
5.0 - 6.0
Type Locality: 
Rhön, Fulda, Hesse, Germany

Hornblende

Synonym Of: 

Ferro-hornblende

Formula: 
☐{Ca2}{Fe2+4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0

Magnesio-hornblende

Formula: 
☐{Ca2}{Mg4Al}(AlSi7O22)(OH)2
Strunz: 
9.DE.10
Hardness: 
5.0 - 6.0

Hematite

Formula: 
Fe2O3
Strunz: 
4.CB.05
Crystal System: 
Trigonal
Hardness: 
5.0 - 6.0

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