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The Enchanting World of Velvet Malachite: A Congo Treasure
Velvet malachite, a stunning variety of malachite, is renowned for its silky, fibrous texture and vibrant green colour. This exquisite mineral is primarily found in the Democratic Republic of Congo, particularly in the Kolwezi mining district of the Lualaba province. Let's delve into the fascinating world of velvet malachite and explore its unique characteristics, formation, and uses. Shop Velvet Malachite Here Formation and Characteristics Velvet malachite forms through the secondary mineralisation of copper deposits. It occurs in the oxidised zones of these deposits, where copper minerals undergo chemical reactions with water and carbon dioxide. This process leads to...
The Hidden Treasures of the High-Atlas: Exploring Moroccan Quartz Geodes
Nestled within the rugged terrain of the High-Atlas Mountains, Moroccan Quartz Geodes are geological wonders that captivate both scientists and collectors. These geodes, often spherical or oblong in shape, are hollow rocks lined with stunning quartz crystals. Their formation is a testament to the slow and intricate processes of nature that involves a complex geological process that spans millions of years. 1. Volcanic Activity and Cavity Formation The initial stage of geode formation begins with volcanic activity. Basaltic lava flows, rich in silica, cool and solidify, trapping gas bubbles within the rock. These gas bubbles create cavities or voids, which are...
The Enigmatic Rainbow Lattice Sunstone from Tomkap Mine
Rainbow Lattice Sunstone is a captivating gemstone known for its unique optical phenomena, including aventurescence and adularescence. These effects are caused by the oriented inclusions of hematite and magnetite, which create a stunning lattice pattern that shimmers with iridescent colours. The Tomkap Mine: A Hidden Treasure The Tomkap Mine, owned by Crystal World is located in the Harts Range of the Northern Territory, Australia. It is one of the primary sources of this rare gemstone. This remote area, known for its dry plains and rocky outcrops, provides the perfect environment for the formation of Rainbow Lattice Sunstone. The mine itself is relatively...
Sunstone: A Gemstone of Optical Phenomena
Sunstone is a captivating gemstone belonging to the feldspar mineral group. Feldspar refers to a group of rock-forming minerals that are incredibly abundant in the Earth’s crust. Known for its unique optical effects, sunstone has been cherished for centuries for both its beauty and historical significance. This article delves into the properties, formation, occurrence, and uses of sunstone, providing a comprehensive overview of this remarkable mineral. Properties Sunstone displays a variety of intriguing optical phenomena, predominantly attributed to the presence of microscopic inclusions of hematite or goethite. These inclusions are systematically aligned in parallel planes within the crystal lattice....
Unearthing the Past: The Crinoid Fossil Jimbacrinus bostocki in Western Australia
Western Australia is a treasure trove of geological wonders, and among its most fascinating finds are the crinoid fossils of Jimbacrinus bostocki. These ancient marine organisms, often referred to as “sea lilies,” provide a captivating glimpse into the marine ecosystems of the Permian period, approximately 280 million years ago. The fossils of Jimbacrinus bostocki were first discovered in 1949 by the manager of Jimba Jimba cattle station, Mr. J. Bostock, after whom the species is named. These fossils were unearthed in the Cundlego Formation, a sandstone formation created by flooding and storm event deposition during the Early Permian period. The region now known as Gascoyne Junction was once...
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