Euchlorine
Euchlorine (KNaCu3(SO4)3O) is a rare emerald-green colored sulfate mineral found naturally occurring as a sublimate in fumaroles around volcanic eruptions. It was first discovered in fumaroles of the 1868 eruption at Mount Vesuvius in Campania, Italy by Arcangelo Scacchi. The name ‘euchlorine’ comes from the greek word εΰχλωρος meaning “pale green” in reference to the mineral’s color, other reported spellings include euclorina, euchlorin, and euchlorite.

The ideal formula of euchlorine is KNaCu3(SO4)3O though calcium (Ca) and magnesium (Mg) occasionally substitute into the crystal lattice. Euchlorine is structurally related to puninite (Na2Cu3(SO4)3O) and fedotovite (K2Cu3(SO4)3O), all of which are included in the "euchlorine group" of minerals.

One of the distinguishing physical properties helpful for identifying euchlorine in hand sample is its streak, which is a pistachio-green color. If trying to find euchlorine in the field, wear protective clothing as the volcanic fumaroles around which it occurs can be very hot (approximately 300 to 650°C, 580 to 1200°F) and can cause severe steam burns if not adequately protected.
Q764802
sulfate mineral
Concept
Q16909629
sublimate
UNK
Q105880
fumaroles
Concept
Q8072
volcanic
Concept
Q524
Mount Vesuvius
LOC
Q1438
Campania
LOC
Q38
Italy
LOC
None
Arcangelo Scacchi
UNK
Q706
calcium
Concept
Q660
magnesium
Concept
Q36071
pistachio
Concept
Q170518
steam burns
Concept
Q3734138
Euchlorine
Concept
Q3734138
Euchlorine
Concept
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1868
DATE
1200-01-01T00:00:00Z^^http://www.w3.org/2001/XMLSchema#dateTime
1200
DATE
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NUMBER
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NUMBER
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NUMBER
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NUMBER
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NUMBER
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NUMBER
country
country