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POLDERVAARTITE

POLDERVAARTITE

269

$350.00 AUD
$350.00 AUD
SALE ! TOO LATE, SOLD
269
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Poldervaartite is an exceptionally rare mineral first identified in 1992 at the Wessels Mine located in the Kalahari manganese fields of Northern Cape Province, South Africa. Its chemical composition is represented by the formula (CaMn2+)2(SiO3OH)(OH), classifying it as a Calcium Manganese Silicate Hydroxide, with a molecular weight of 197.68 grams. To date, the Wessels Mine and the nearby N’Chwaning Mine remain the sole known sources of this mineral. Poldervaartite exhibits a specific gravity of 2.91 g/cm³ and a refractive index ranging from 1.634 to 1.656, categorized as Biaxial (+). Due to the majority of its crystals being unsuitable for faceting, it is considered a very rare gem, displaying colors that vary from colorless to a light orangish-pink.

Specimen details

To find the dimensions and weight of a specimen, please add the product to your basket. Alle details will appear here. Remove the specimen if unwanted. The numbers under "variant" are the measurements in mm and mostly added weight in grams. Where known, the origin of the specimen is mentioned. The number at the end, is the specimen number in our collection. Colours may vary, due to photography.

Care

It's important to know that many minerals can be effectively cleaned with water. However, before using any cleaning methods, such as dissolvers or ultrasound, please take the time to research online. Improper use of these techniques could potentially harm your specimen.

Shipping

Shipping fees depend on the weight of your order and its destination, and they will be calculated at checkout. Not all platforms use the same rate. We will inform you about any rebates where possible. If you have any questions, feel free to reach out to us before placing your order. We strive to use the most economical shipping methods for your specimens and combine multiple orders to minimize costs. Please note that packaging is included in the shipping fees.
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