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Andradite & Hedenbergite

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PFK646905

Andradite & Hedenbergite

Classic Locality

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Description
Locality: 
Avissalos, Serifos Island, Milos, South Aegean, Greece
Class: 
Crystals on Matrix
Size Range: 
Miniature (4.5-7 cm)
Size: 
5.9 × 4.5 × 4.2 cm
Largest Crystal: 
1.20cm
Description

I first saw these fine Greek garnets in Munich, 2009 if I recall correctly. They were found by a couple of German collectors/dealers and were presented there for the first time. I was so impressed and excited that I bought a large portion of the specimens that were available. At that time, only I and a major European dealer were dealing with those online. I must note that there was a big number of specimens with smaller crystals, up to 5-6mm but I did not buy those. I only bought the pieces with 1cm+ crystals which were better by far and of course a lot more expensive. Over the years more and more people started to buy them and now they can be seen on the market from time to time. What I see is that many pieces that are being offered online nowadays, are those with the smaller crystals, the ones I passed on, because I only wanted the good ones. The specimen that I am auctioning here is a fine miniature with sharp, dodecahedral crystals of brownish andradite with darker edges. The largest crystal is of course more than 1cm, 1.2cm across to be precise. They are sitting on contrasting greenish hedenbergite. The piece is undamaged with only a few contacts on the periphery which are of no importance.

Mineral Data
What's on the rock

Andradite

Formula: 
Ca3Fe3+2(SiO4)3
Strunz: 
9.AD.25
Crystal System: 
Isometric
Hardness: 
6.5 - 7.0
Streak: 
White
Type Locality: 
Drammen, Buskerud, Norway

Hedenbergite

Formula: 
CaFe2+Si2O6
Group Parent: 
Clinopyroxene Subgroup
Strunz: 
9.DA.15
Hardness: 
5.5 - 6.5
Type Locality: 
Mormorsgruvan, Tunaberg Cu-Co Ore Field, Tunaberg, Nyköping, Södermanland, Sweden

Seller Information

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