Bioptite on Calcite Specimen from Erongo Region, Namibia

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Bioptite on Calcite Specimen from Erongo Region, Namibia Item Description : Namibia is endowed with an exceptionally rich mineralogical heritage, which has over the years attracted both local researchers and scientists from all over the world, and also collectors from near and far. Comments on this piece : Beautiful black bioptite on calcite specimen from Erongo Region, Namibia. Large well-crystallized black biotite crystals in rhombic cleavage of translucent orange calcite. The surfaces on the front and rear of the biotite are composed of stepped growth layers of parallel crystals. An excellent specimen of a common mineral. No damage. Size : 45mmx30mmx27mm (25mm equals 1 inch) Weight : 45g About Us Payment Shipping Returns Contact Us About Us Please allow me to introduce us:We are Jaco and Tania Janse van Nieuwenhuizen and together we form the heart of Crystal Spring Minerals or, CSM for short.Crystal Spring Minerals was born in February 2001 when we came up with the idea of trading local minerals in South Africa. The Orange river, or Gordonia pegmatite belt holds a wide variety of interesting minerals but in very small quantities. This means that large scale mining enterprises are very limited and mostly not economically viable. The pegmatites contain mainly rare metal minerals like; tantalite, beryl and native bismuth. Quartz is ever present with accompanying feldspar, scroll and muscovite. Most of these pegmatite ridges are massive and don't bare crystals at all. The crystals that did form are rarely of outstanding quality and are mostly pale, milky white quartz crystals.We are based in Kakamas in the Northern Cape province of South Africa. We are excellently located right in the centre of major specimen and mineral localities such as the Kalahari Manganese Fields, Orange river pegmatite belt and on the border of Namibia. This means that we can travel 500km in almost any direction and will find some mineral or specimen of interest. The edge that we have from this location also transpires to our customers, giving you the latest finds at the best prices. Now, we saw the need to open up a new eBay store dedicated to selling all rough rock and processed stone products. This brings our customers straight to their real passion without needing to go trough a lot of listings that they are not really interested in, in the same time allowing us to expand the range of products that we offer. Hence you will find that we offer� a larger variety of minerals as well as processed stone goods than ever before.With the experience that we gained the past couple of years we can provide some mineral specimens of outstanding quality that is sought after in the specimen trade as well as rough material and processed stone goods to your delight. Though we are still a small business we strive to be the best, most reliable trader in the products that we sell. Our marketing team, Jacoline and Mariëtte handles all eBay sales and can help you with all your queries on the items we have listed. Feel free to drop us a note should you require any assistance. Payment We only accept Once you are done buying and bidding please send us a mail to let us know that you are done and we will send you a combined invoice for your purchases. We use the address that you have registered with Paypal as the shipping address, so please make sure that the address that you have registered with Paypal is your true current address.Your parcel is shipped within 24 hours, weekdays, once we received an e-mail from Paypal confirming your payment. We are closed over December for the Christmas holidays, so this is the only time of year when we will not be able to ship within 24 hours. We usually have all parcels shipped out before the 5th January. Shipping We ship worldwide via international airmail. Multiple winnings can be shipped together as well as purchases from our two separate eBay stores. Please let us know when you a... read more

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