Stunning Closed Gwindel Quartz Specimen

Description: Stunning Closed Gwindel Quartz Specimen from Shalman, Mohmand Agency, Khyber Pakhtunkhwa, Pakistan. Amazingly beautiful specimen with great perfection and a major twist. Weight: 22.7 gramsDimensions: 35x25x40 mm A variety of QuartzQuartz crystals that grew along and are slightly rotated around a single a-axis. This results in twisted and tabular crystals. The twist reflects the handedness of the quartz crystals. With increasing distance from the base- right-handed gwindels twist clockwise.- left-handed gwindels twist counter-clockwise.In most gwindels the handedness can easily be determined by the position of the trapezohedral "x"-faces.Gwindels are found in alpine-type fissures and are always accompanied by macromosaic quartz of normal habit. They are often smoky, rock crystal gwindels are less common.The structural base of the twist has just recently been discovered: A high number of straight screw dislocations cause a uniform so-called Eshelby twist (Cordier and Heidelbach, 2013; Eshelby, 1953) that is typical for slow growing crystals. This slow growth is in line with the occurrence of gwindels in certain alpine-type fissures.Because of the often multiple tips and the strong development of sutures on the crystal surface, gwindels are often described as lateral stacks of quartz crystals. This is not correct: each gwindel starts as a single crystal, and only the overgrowth with quartz of a macromosaic structure causes the impression of a composite specimen (Kuzmina et al, 1987; Dolino and Bastie, 2009). (Ref Mindat)We have some best minerals and crystals for you from Pakistan and Afghanistan, We put all our efforts to bring high grade minerals from Pakistan & Afghanistan mines. Our specialty is Tourmaline, Morganite, Aquamarines, Kunzite, Brookite and Rare Minerals including Amphibole Quartz.グウィンデルクォーツ کوارتز گویندل גווינדל קוורץ gwindel kwarts quartz gwindel кварц гвиндельWelcome to Rock & Mineral Company - Your Source for Exceptional Minerals and Crystals from Pakistan and Afghanistan! Dear Valued Customers, We are delighted to welcome you to Rock & Mineral Company, your premier destination for exquisite minerals and crystals sourced directly from the rich geological landscapes of Pakistan and Afghanistan. Our passion lies in offering a diverse collection that not only showcases the natural beauty of these regions but also features rare minerals that are truly one-of-a-kind. About Us:At Rock & MIneral Company, we take pride in curating a selection of minerals and crystals that highlight the geological wonders of Pakistan and Afghanistan. Our team is dedicated to bringing you authentic and high-quality specimens, carefully handpicked to ensure their uniqueness and beauty. What Sets Us Apart: Authenticity: All our minerals and crystals, including but not limited to Quartz, Amethyst, Aquamarine, Tourmaline, and Apatite, are sourced from reputable suppliers, ensuring the authenticity of each specimen.Diversity: Explore a wide range of minerals, from the commonly found Calcite and Fluorite to the exceptionally rare Axinite, Vesuvianite, Brookite, Xenotime, Bastnasite and Spodumene. We specialize in offering specimens that are not only visually stunning but also hold geological significance.Transparency: We provide detailed descriptions and high-resolution images for each item, allowing you to make informed decisions about your purchase.Our Collection: From the Heart of the Earth: Discover minerals and crystals that reflect the geological diversity of Pakistan and Afghanistan, such as Selenite, Celestite, and Pyrite.Rare Finds: Explore our collection of rare minerals, each with its own story and distinct characteristics, including Rhodochrosite, Euclase, and Wulfenite.Custom Orders: Looking for something specific? Contact us, and we'll do our best to source it for you.Why Choose Rock & Mineral Company? Quality Assurance: Our commitment to quality ensures that you receive minerals and crystals that meet or exceed your expectations.Secure Transactions: Shop with confidence knowing that your transactions are secure and your privacy is protected.Worldwide Shipping: We offer worldwide shipping to bring the beauty of these minerals to collectors and enthusiasts around the globe.Connect With Us:Have questions or need assistance? We're here to help! Reach out to us through eBay messages, and our knowledgeable team will be happy to assist you. Thank you for choosing Rock & Mineral Company as your trusted source for exceptional minerals and crystals. We look forward to serving you and sharing the beauty of these geological treasures. Happy Collecting! [ROCK & MINERAL COMPANY]

Price: 325 USD

Location: Peshawar, Khyber Pakhtunkhwa

End Time: 2025-02-08T04:57:44.000Z

Shipping Cost: 0 USD