{"title":"Uncategorized","description":"\u003cp\u003eCheck out some unique pieces and rarities.\u003c\/p\u003e","products":[{"product_id":"fluorescent-alunite-with-red-iron-oxide-natural-hydrothermal-alteration-specimen-uc1","title":"Fluorescent Alunite with Red Iron Oxide | Natural Hydrothermal Alteration Specimen #UC1","description":"\u003cp\u003eThe specimen shows a fascinating record of hydrothermal alteration, with creamy white alunite-rich material intergrown with a strongly contrasting red iron-oxide-rich zone and a darker altered volcanic host rock. The boundaries between these zones create attractive, naturally formed patterns across the specimen.\u003c\/p\u003e\n\u003cp\u003eUnder UV light, the cream-white portions show a noticeable blue-white fluorescence, adding another dimension to the specimen and making it particularly interesting for collectors of fluorescent minerals. The exact fluorescent component has not been analytically confirmed, so the fluorescence is presented as an observed property rather than attributed exclusively to alunite.\u003c\/p\u003e\n\u003cp\u003eThe overall texture and mineral associations are characteristic of acidic hydrothermal alteration in volcanic environments, commonly associated with alunite-forming systems.\u003c\/p\u003e\n\u003cp\u003eMineral: Alunite-rich alteration rock\u003c\/p\u003e\n\u003cp\u003eAssociated material: Iron oxides \/ altered volcanic host\u003c\/p\u003e\n\u003cp\u003eLocality: Unknown\u003c\/p\u003e\n\u003cp\u003eFluorescence: Cream-white areas fluoresce under UV\u003c\/p\u003e\n\u003cp\u003eCondition: Natural, unpolished specimen\u003c\/p\u003e\n\u003cp\u003eA particularly nice specimen for collectors interested in alunite, hydrothermal alteration, fluorescent minerals, and unusual geological textures.\u003c\/p\u003e\n\u003cp\u003eWeight: 471 gr\u003c\/p\u003e\n\u003cp\u003eMeasurements: 90x60x55 mm\u003c\/p\u003e","brand":"Punta Cristal","offers":[{"title":"Default Title","offer_id":51796576895254,"sku":null,"price":3880.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/5034\/7798\/files\/rn-image_picker_lib_temp_95ba8c66-1d47-4425-92f0-78f656b02919.jpg?v=1788076861"},{"product_id":"fluorescent-alunite-with-red-iron-oxide-natural-hydrothermal-alteration-specimen-uc1-copy","title":"Natural Azurite \u0026 Malachite on Matrix (Congo) #UC2","description":"\u003cp\u003eA beautiful natural Azurite and Malachite specimen displaying an intricate intergrowth of intense royal-blue azurite and vibrant green malachite across a dark, earthy matrix.\u003c\/p\u003e\n\u003cp\u003eThe azurite occurs predominantly as fine-grained to massive aggregates, with malachite extensively intergrown throughout the surface. Together, the contrasting blue and green copper minerals create a striking natural pattern, with areas of turquoise-green secondary mineralization and rusty brown matrix adding further character.\u003c\/p\u003e\n\u003cp\u003eThis is a natural, unpolished specimen, retaining its original rough texture and mineral associations. Its appearance is characteristic of copper-rich secondary mineralization associated with the Central African Copperbelt.\u003c\/p\u003e\n\u003cp\u003eMinerals: Azurite, Malachite\u003c\/p\u003e\n\u003cp\u003eOrigin: Congo (locality unspecified)\u003c\/p\u003e\n\u003cp\u003eForm: Natural rough specimen on matrix\u003c\/p\u003e\n\u003cp\u003eTreatment: None \/ natural\u003c\/p\u003e\n\u003cp\u003eWeight: 542 gr\u003c\/p\u003e\n\u003cp\u003eMeasurements: 90x75x40 mm\u003c\/p\u003e","brand":"Punta Cristal","offers":[{"title":"Default Title","offer_id":51796983841046,"sku":null,"price":3700.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/5034\/7798\/files\/rn-image_picker_lib_temp_0fa565b4-08f9-414f-8796-05d545bf4620.jpg?v=1788079090"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0898\/5034\/7798\/collections\/rn-image_picker_lib_temp_31fb47cd-a528-41ec-9cd1-4acc4977e460.jpg?v=1788077262","url":"https:\/\/puntacristalminerals.com\/collections\/uncategorized.oembed","provider":"Punta Cristal","version":"1.0","type":"link"}