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Melanterite

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TPX917357

Melanterite

Classic Locality

Description Tabs

Description
Locality: 
Alfredo Pit, Rio Tinto Mines, Huelva, Andalusia, Spain
Class: 
Crystal Group/Cluster
Size Range: 
Small cabinet (7-10 cm)
Size: 
9 × 2.5 × 2.5 cm
Weight: 
40.00gr
Description

Very interesting group of stalactitic crystals of this interesting sulfate that appeared many years ago when Pozo Alfredo was in full work in the 90s.
This mineral is not stable and, if it is exposed outdoors, it becomes dehydrated by losing a water molecule and becoming a different white ore and earthly appearance.
This piece comes from an old collection, and the collector who found this mineral, had the good idea of putting the piece inside a glass tube and closed it tightly, for that reason it has reached this day with its authentic green color. The date of the collection of the copy seems to be on August 6, 1991.

Mineral Data
What's on the rock

Melanterite

Formula: 
FeSO4·7H2O
Strunz: 
7.CB.35
Hardness: 
2.0
Streak: 
White.

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