Watermelon tourmaline, lepidolite, quartz

Watermelon tourmaline, lepidolite, quartz

255 / $280

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A very aesthetic sample of a 5 cm long columnar watermelon tourmaline that growing with the crystal of quartz into the cavity. The tourmaline crystal grows directly from the rock pad and is terminated by two cascades. At the first end-cascade in 4 cm of its length, there are 2 smaller lepidolite crystals and the second termination of the tourmaline is already narrower. The surrounding rock is a pegmatite composed of quartz, lepidolite, muscovite and feldspar. Watermelon tourmaline is a variety of coloured tourmaline (elbaite), where the core is red (rubellite) and the outside is green (verdelite). The scales of lepidolite have a deep pink colour and the muscovite has silver reflections.

Formula:

Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

Dimensions:9 × 6 × 6.5 cm
Country:

Locality:

Santa Rosa

Color:

,

Group:,
Zodiac:,
Categories: Silicates, Tourmaline, Libra,

Description

Tourmalines are complex borosilicates of aluminium and many other elements, mainly sodium, iron, magnesium, and lithium. These elements represent themselves in various patterns in tourmaline crystal structures. It got its name from the Sinhalese turamali – multicoloured. In 1703, Dutch brought tourmalines from Sri Lanka to Europe. It belongs to the trigonal system. Elbaite is the most colourful mineral of the tourmaline group. Elbaite is the name of the Italian island Elba, an important deposit uncovered in 1913.

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Additional information

Formula:

Na(Li1.5Al1.5)Al6(Si6O18)(BO3)3(OH)3(OH)

Dimensions:9 × 6 × 6.5 cm
Country:

Locality:

Santa Rosa

Color:

,

Group:,
Zodiac:,
Categories: Silicates, Tourmaline, Libra,
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