{"title":"Manganês","description":"\u003cp data-start=\"0\" data-end=\"229\"\u003eO \u003cstrong data-start=\"3\" data-end=\"16\"\u003emanganês\u003c\/strong\u003e é um \u003cstrong data-start=\"24\" data-end=\"44\"\u003eelemento químico\u003c\/strong\u003e de símbolo \u003cstrong data-start=\"56\" data-end=\"62\"\u003eMn\u003c\/strong\u003e e número atómico \u003cstrong data-start=\"85\" data-end=\"91\"\u003e25\u003c\/strong\u003e. É um metal de transição, cinzento-prateado, duro e quebradiço, que desempenha um papel importante tanto na indústria como na biologia.\u003c\/p\u003e\n\u003chr data-start=\"231\" data-end=\"234\"\u003e\n\u003ch3 data-start=\"236\" data-end=\"276\"\u003e🔬 Propriedades químicas e físicas\u003c\/h3\u003e\n\u003cul data-start=\"277\" data-end=\"616\"\u003e\n\n\u003cli data-start=\"277\" data-end=\"297\"\u003e\n\n\u003cp data-start=\"279\" data-end=\"297\"\u003e\u003cstrong data-start=\"279\" data-end=\"290\"\u003eSímbolo\u003c\/strong\u003e : Mn\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"298\" data-end=\"326\"\u003e\n\n\u003cp data-start=\"300\" data-end=\"326\"\u003e\u003cstrong data-start=\"300\" data-end=\"319\"\u003eNúmero atómico\u003c\/strong\u003e : 25\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"327\" data-end=\"367\"\u003e\n\n\u003cp data-start=\"329\" data-end=\"367\"\u003e\u003cstrong data-start=\"329\" data-end=\"347\"\u003eMassa atómica\u003c\/strong\u003e : cerca de 54,94 u\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"368\" data-end=\"413\"\u003e\n\n\u003cp data-start=\"370\" data-end=\"413\"\u003e\u003cstrong data-start=\"370\" data-end=\"383\"\u003eAparência\u003c\/strong\u003e : metal cinzento-branco, frágil\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"414\" data-end=\"531\"\u003e\n\n\u003cp data-start=\"416\" data-end=\"531\"\u003e\u003cstrong data-start=\"416\" data-end=\"432\"\u003eEstado natural\u003c\/strong\u003e : frequentemente encontrado combinado com outros elementos em minerais como a \u003cstrong data-start=\"508\" data-end=\"522\"\u003epirolusite\u003c\/strong\u003e (MnO₂)\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"532\" data-end=\"616\"\u003e\n\n\u003cp data-start=\"534\" data-end=\"616\"\u003e\u003cstrong data-start=\"534\" data-end=\"547\"\u003eOxidação\u003c\/strong\u003e : formas variadas (de +2 a +7), sendo as mais comuns +2, +4 e +7\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr data-start=\"618\" data-end=\"621\"\u003e\n\u003ch3 data-start=\"623\" data-end=\"648\"\u003e🏭 Usos industriais\u003c\/h3\u003e\n\u003cp data-start=\"649\" data-end=\"703\"\u003eO manganês é essencial em muitas áreas:\u003c\/p\u003e\n\u003col data-start=\"705\" data-end=\"1189\"\u003e\n\n\u003cli data-start=\"705\" data-end=\"944\"\u003e\n\n\u003cp data-start=\"708\" data-end=\"725\"\u003e\u003cstrong data-start=\"708\" data-end=\"723\"\u003eMetalurgia\u003c\/strong\u003e :\u003c\/p\u003e\n\n\u003cul data-start=\"729\" data-end=\"944\"\u003e\n\n\u003cli data-start=\"729\" data-end=\"852\"\u003e\n\n\u003cp data-start=\"731\" data-end=\"852\"\u003e\u003cstrong data-start=\"731\" data-end=\"743\"\u003eLigas\u003c\/strong\u003e : utilizado no aço para melhorar a sua resistência e dureza (por exemplo, o aço ao manganês).\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"856\" data-end=\"944\"\u003e\n\n\u003cp data-start=\"858\" data-end=\"944\"\u003e\u003cstrong data-start=\"858\" data-end=\"877\"\u003eDessulfuração\u003c\/strong\u003e : elimina o enxofre e o oxigénio durante a produção do aço.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"946\" data-end=\"1080\"\u003e\n\n\u003cp data-start=\"949\" data-end=\"964\"\u003e\u003cstrong data-start=\"949\" data-end=\"962\"\u003eBaterias\u003c\/strong\u003e :\u003c\/p\u003e\n\n\u003cul data-start=\"968\" data-end=\"1080\"\u003e\n\n\u003cli data-start=\"968\" data-end=\"1080\"\u003e\n\n\u003cp data-start=\"970\" data-end=\"1080\"\u003eUtilizado em pilhas alcalinas (ex.: pilha de dióxido de manganês) e em algumas baterias de iões de lítio.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1082\" data-end=\"1189\"\u003e\n\n\u003cp data-start=\"1085\" data-end=\"1113\"\u003e\u003cstrong data-start=\"1085\" data-end=\"1111\"\u003ePigmentos e cerâmicas\u003c\/strong\u003e :\u003c\/p\u003e\n\n\u003cul data-start=\"1117\" data-end=\"1189\"\u003e\n\n\u003cli data-start=\"1117\" data-end=\"1189\"\u003e\n\n\u003cp data-start=\"1119\" data-end=\"1189\"\u003eCompostos coloridos utilizados em vidros, esmaltes e tintas.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ol\u003e\n\u003chr data-start=\"1191\" data-end=\"1194\"\u003e\n\u003ch3 data-start=\"1196\" data-end=\"1218\"\u003e🧬 Papel biológico\u003c\/h3\u003e\n\u003cp data-start=\"1219\" data-end=\"1291\"\u003eO manganês é um \u003cstrong data-start=\"1239\" data-end=\"1266\"\u003eoligoelemento essencial\u003c\/strong\u003e para os seres vivos:\u003c\/p\u003e\n\u003cul data-start=\"1292\" data-end=\"1635\"\u003e\n\n\u003cli data-start=\"1292\" data-end=\"1424\"\u003e\n\n\u003cp data-start=\"1294\" data-end=\"1424\"\u003eEnvolvido no funcionamento das enzimas, nomeadamente das relacionadas com o metabolismo dos hidratos de carbono, dos lípidos e dos aminoácidos.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1425\" data-end=\"1499\"\u003e\n\n\u003cp data-start=\"1427\" data-end=\"1499\"\u003eNecessário para a formação dos ossos e para a boa saúde do sistema nervoso.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1500\" data-end=\"1635\"\u003e\n\n\u003cp data-start=\"1502\" data-end=\"1635\"\u003eEncontra-se naturalmente em alimentos como cereais integrais, frutos secos, leguminosas e vegetais de folha verde.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e\n\u003chr data-start=\"1637\" data-end=\"1640\"\u003e\n\u003ch3 data-start=\"1642\" data-end=\"1657\"\u003e⚠️ Toxicidade\u003c\/h3\u003e\n\u003cul data-start=\"1658\" data-end=\"1915\"\u003e\n\n\u003cli data-start=\"1658\" data-end=\"1709\"\u003e\n\n\u003cp data-start=\"1660\" data-end=\"1709\"\u003eEm \u003cstrong data-start=\"1662\" data-end=\"1677\"\u003edoses baixas\u003c\/strong\u003e, é vital para o organismo.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\u003cli data-start=\"1710\" data-end=\"1915\"\u003e\n\n\u003cp data-start=\"1712\" data-end=\"1915\"\u003eEm \u003cstrong data-start=\"1714\" data-end=\"1728\"\u003edoses elevadas\u003c\/strong\u003e (nomeadamente por inalação no contexto industrial), pode provocar uma doença neurológica denominada \u003cstrong data-start=\"1835\" data-end=\"1849\"\u003emanganismo\u003c\/strong\u003e, com sintomas semelhantes aos da doença de Parkinson.\u003c\/p\u003e\n\n\n\u003c\/li\u003e\n\n\n\u003c\/ul\u003e","products":[{"product_id":"manganese-afrique-du-sud-a-pierre-roulee","title":"Manganês África do Sul A (pedra rolada)","description":"\u003cp\u003e\u003cspan style=\"font-family: 'Trebuchet MS', Arial, Helvetica, sans-serif;\"\u003eMANGAN-R-01\u003cbr\u003eOrigem: África do Sul\u003cbr\u003eGrau: A\u003c\/span\u003e \u003cbr\u003e\u003c\/p\u003e\n\u003cdiv\u003e\n\n\u003cstrong\u003e\u003cspan class=\"PBMainTxt\"\u003eDimensões:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003e30-50mm\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan class=\"PBMainTxt\"\u003ePeso:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr\u003eEntre 15 e 25g\u003cbr\u003e\u003cbr\u003e\u003cstrong\u003e\u003cspan class=\"PBMainTxt\"\u003eOrigem:\u003c\/span\u003e\u003c\/strong\u003e\u003cbr style=\"font-size: 11px;\"\u003e\u003cspan style=\"font-size: 11px; background-color: rgb(255, 255, 255);\"\u003eÁfrica do Sul\u003cbr\u003e\u003c\/span\u003e\u003cbr style=\"font-size: 11px;\"\u003e\u003cspan class=\"PBMainTxt\"\u003eGrau:\u003c\/span\u003e\u003cbr style=\"font-size: 11px;\"\u003e\u003cspan style=\"background-color: rgb(255, 255, 255); font-size: 11px;\"\u003eA = bom\u003c\/span\u003e\u003cbr\u003e\u003cbr\u003ePedra rolada de manganês de 15-25g\u003cbr\u003eVendida à unidade\u003cbr\u003e\u003cstrong\u003eAs formas e as cores podem variar de uma pedra para outra.\u003c\/strong\u003e\u003cbr\u003e\n\n\u003c\/div\u003e\n\u003cdiv\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cdiv\u003e\n\n\u003cp\u003eO manganês da África do Sul é uma pedra mineral apreciada pelas suas notáveis propriedades energéticas. Conhecida por promover o equilíbrio emocional e a estabilidade mental, ajuda a dissipar o stress e a ansiedade do dia a dia. Esta pedra está tradicionalmente associada ao enraizamento e à clareza de pensamento, permitindo uma melhor concentração e uma tomada de decisão mais segura. No plano energético, o manganês estimula a autoconfiança e reforça a resiliência perante os desafios. É também reconhecido pelas suas virtudes calmantes, sendo ideal para momentos de turbulência emocional. A sua forma rolada torna-o num companheiro de bolso perfeito para beneficiar das suas propriedades ao longo do dia. Cada pedra é única, extraída diretamente\u003c\/p\u003e\n\n\n\u003c\/div\u003e","brand":"La Boite à Cailloux","offers":[{"title":"Default Title","offer_id":48791467655516,"sku":"MANGAN-R-01","price":5.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/8577\/6732\/files\/manganese-afrique-du-sud-a-pierre-roulee-1452409.jpg?v=1779716352"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0808\/8577\/6732\/collections\/manganese-8322517.jpg?v=1779712293","url":"https:\/\/www.laboiteacailloux.com\/pt\/collections\/manganese.oembed","provider":"La Boite à Cailloux","version":"1.0","type":"link"}