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AEGIRINE CRYSTAL FELDSPAR

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Aegirine Crystal Feldspar cluster.  Lovely lustrous hard black crystals and contrasting white Albite combined in one specimen.  An amazing crystal, that looks even better in person.  The main crystal is quite wide and there are several distinct crystals also growing alongside.  Interesting combination of two metal sodium silicates from nature.  A great collector piece and an interesting and less common mineral.

Location:
Mount Malosa, Zomba Valley, Malawi.

Dimensions:
10.6cm x 1cm x 1cm, 16g.

Aegirine
Sodium Iron Silicate
NaFe3+Si2O6

Albite
Sodium Aluminum Silicate
Na(AlSi3O8)

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AEGIRINE CRYSTAL FELDSPARAEGIRINE CRYSTAL FELDSPAR

Aegirine Crystal Feldspar cluster.  Lovely lustrous hard black crystals and contrasting white Albite combined in one specimen.  An amazing crystal, that looks even better in person.  The main crystal is quite wide and there are several distinct crystals also growing alongside.  Interesting combination of two metal sodium silicates from nature.  A great collector piece and an interesting and less common mineral.

Location:
Mount Malosa, Zomba Valley, Malawi.

Dimensions:
10.6cm x 1cm x 1cm, 16g.

Aegirine
Sodium Iron Silicate
NaFe3+Si2O6

Forming impressive crystals that have become classics among collectors.  These tall opaque monument like crystals that jut majestically out from their host rocks are simply splendid.  Named after the Norse God of the Sea Aegir.  Aegirine is difficult to distinguish from its close cousin Augite.  Under normal circumstances, the steep pyramids of Aegirine are the only point of differentiation.

Albite
Sodium Aluminum Silicate
Na(AlSi3O8)

Albite is the last of the feldspars to crystallize from molten rock.  The process of crystallization from a molten rock body serves to isolate rarer elements in the last stages of crystallization and therefore produces rare mineral species.  Albite is often found with lovely rare and beautiful minerals.  Although usually not an exceptional collection mineral in itself, albite can be a nice accessory mineral to other mineral species.  A variety associated with tourmaline is called cleavelandite and forms extremely thin, platy, white and sometimes very transparent crystals.

Weight150 g
Dimensions12 × 10 × 8 cm
color

Black, White

Aegirine Crystal Feldspar cluster.  Lovely lustrous hard black crystals and contrasting white Albite combined in one specimen.  An amazing crystal, that looks even better in person.  The main crystal is quite wide and there are several distinct crystals also growing alongside.  Interesting combination of two metal sodium silicates from nature.  A great collector piece and an interesting and less common mineral.

Location:
Mount Malosa, Zomba Valley, Malawi.

Dimensions:
10.6cm x 1cm x 1cm, 16g.

Aegirine
Sodium Iron Silicate
NaFe3+Si2O6

Albite
Sodium Aluminum Silicate
Na(AlSi3O8)

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