CINXE.COM

<!DOCTYPE html><html lang="en-US"><head><title>Just a moment...</title><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><meta http-equiv="X-UA-Compatible" content="IE=Edge"><meta name="robots" content="noindex,nofollow"><meta name="viewport" content="width=device-width,initial-scale=1"><style>*{box-sizing:border-box;margin:0;padding:0}html{line-height:1.15;-webkit-text-size-adjust:100%;color:#313131;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,Noto Sans,sans-serif,Apple Color Emoji,Segoe UI Emoji,Segoe UI Symbol,Noto Color Emoji}body{display:flex;flex-direction:column;height:100vh;min-height:100vh}.main-content{margin:8rem auto;max-width:60rem;padding-left:1.5rem}@media (width <= 720px){.main-content{margin-top:4rem}}.h2{font-size:1.5rem;font-weight:500;line-height:2.25rem}@media (width <= 720px){.h2{font-size:1.25rem;line-height:1.5rem}}#challenge-error-text{background-image:url(data:image/svg+xml;base64,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);background-repeat:no-repeat;background-size:contain;padding-left:34px}@media (prefers-color-scheme:dark){body{background-color:#222;color:#d9d9d9}}</style><meta http-equiv="refresh" content="120"></head><body class="no-js"><div class="main-wrapper" role="main"><div class="main-content"><noscript><div class="h2"><span id="challenge-error-text">Enable JavaScript and cookies to continue</span></div></noscript></div></div><script>(function(){window._cf_chl_opt={cvId: '3',cZone: "publications.waset.org",cType: 'non-interactive',cRay: '9135ccd3883444ba',cH: 'Jl1MPBmac6DLqbdpUFuBtx6JMLxBZDJ7d8sEswqQ5m4-1739795546-1.2.1.1-EzdLLbjvRYhFy7QLIfIFzNzFbfm81qrqZJJ8a7dmgAFDtb9Dyy5oDjh4xsdZse69',cUPMDTk: "\/abstracts\/search?q=tailings%20of%20scheelite&__cf_chl_tk=1MmEPzmZBYSxKW1cP5Eej1Q9fCXljHzwnXj1cJjraHQ-1739795546-1.0.1.1-Li7TqdLroWdeXQZBQDGLn5qgUxeUnItsjPDe6p3JbMw",cFPWv: 'b',cITimeS: '1739795546',cTTimeMs: '1000',cMTimeMs: '120000',cTplC: 0,cTplV: 5,cTplB: 'cf',cK: "",fa: "\/abstracts\/search?q=tailings%20of%20scheelite&__cf_chl_f_tk=1MmEPzmZBYSxKW1cP5Eej1Q9fCXljHzwnXj1cJjraHQ-1739795546-1.0.1.1-Li7TqdLroWdeXQZBQDGLn5qgUxeUnItsjPDe6p3JbMw",md: "noGgzlGpL1lYgIeRrjpzq_vXAQcKJKqwxpG9IGoOOnU-1739795546-1.2.1.1-CHAuXFEQJGG5Wod3rsvjEPnz51zStOUO906us6B56EL1HDHEDADtgyAZz6gg42VtHJYlK.5oosLicuLJUK02mM3Xbq243VWvwkF4aO1vch3q985Uoegtsx0tKsQvIgdiMHeoGpm1EmRpCp2T76WFLRfwBApcm2pLU3jG4.yiel48l.2lU1RW.sV9X8xGhIWr6muJQMVxnw7HwbkTGtlT58416rvj0QMMuOZgw_oQw.qdEO42K.Iquc5jxzIvsWbgDE.PuakVgVZa_O2fhDVbYZ1hf0hURNDw95vu6PNi6R5dn1PdSBvB_Ecy1fG7ukpdXHP_9jvzEnPSco3zW4phk4lp6XAdB5EVmTPKWZMzmqmCa0I9BF_6U0GMLeUGfGA3LJtedlp1028.qLU_XpBotJaalL4zH_VD.Xz8byxeSqSCxTlgQArpqt3w6FVD.UBooCBvFfIxsNFiUwKmHYt7pzqPaF5dcbPkBq3IqxYn4SZ66bIVuh4EF8Tk8jkKSJjRzpGPvu0ihgE_qR69RBlAZQDl8kH4ZfuabqjtcyiHQWzZPrJI_MuuOL4TMINWpDr81rka2eutElMsHt.wf4ok5zB4QpE9rCXrnM9XHn_jL97.SmQmYz5wBaoM6yzy6y6qUwY88tb_HISo0rIxv7vJ64oOiRypMZouYIG0x7YGvnUqAgY8NATv6ZPZ02D6Ss7u.wNB38nopIBcY3t1DAX.WSPPrF706DLPVkliKM5Ciuj5boovT58Hus5MTcA_ebYEoyBHizNwSyWUNJoN8pCredyT495ndvHlbSH1PBkWfMhMPDzJoEEo.TLcotL469o6PBInz2Z6_1tRZHV9cY9u75z8yr4H9o9OQzHuUUK287hhE2lXka0eBdAcOxZcAEI0yKQpOAbZpOcVLcj4NFyZ60F.bfMgTi4.VDaEZ_GfyKcZfWfpH0XN37iVyghDecBdlH2Jt1ZGR87q6PQ4mEAuXmGmnbWYh4rficYcSlNDSTHSi6vP6WY1YCNbkcChDg8foEGihRjaywOIQQYPTNEdJpcraBOhx1ihXlxRm7zBrtRnKP3gY_QwmAnhRGgxGxkwUjiC74ZsCkli6dqR3OYQlCHZJ0.PSc.p3PSW7l7zscSpM1oFqAmc_83ryOutLGU.q9T4Phz7uAs4yxGirl0..99ldZZs1X6snvVHlQA46IVi_tSDsUMpmhLn1n7tlEHsVtYGcKfSqxaEOqL.Zo2AeSQwruJ2dzs0RXyG5vHk56.kAXHLXGYbqb1hIG83URY_.iIA08q5J0FWMqipx6FF9TeY2_krPDQCJMCp0sTBF2uemUWpQDoqfenbDBguk0icfPaYJy4RcEkoSA64RU2MoNXqqDjm0K31k.bB1fQEEt4FZaS9Mtyc60GP7ntRyVGOaF97EBQsEGedvtfRHZtOn0P.EGZY4vdNl8oPXt0oCL9ui8e04SM2eBFyE1JQkuGmC1Aycnt_td4r1kD5Ynetq.vh6ee_N1RX9u8j.lu4god2uwVBUAxxDsVX8lYrHNsT29XxI2dRMdV7gsg7khFlDIwYWmfdUuKRorU7H4ykl4U2FJaSy_cQ.XDtJV4ztD.rRvGidq4Yc0CDNUeJUNQ2xInu8yuwEtwKAdWQLm65Q_cHRVNcfvF2hsMaN1yyKF.u5XXX.qrL7OTRAAJv.bSE.nY7FfihVjUnxfngstghb0JRobBHBZfZHS3qRBqLhWZKpR6ZvJs0UYhZHegMFKFOsJ8.EP0Z6hpRf9O0MZVqi4Af0EUcksh3nC.Urx_Jr1Yp9jZhEhEcLHj9AohAtp5nRR.OqWhD.5GcDpEpJK2kFvy4QR1jMLVQVF3vURnlyk8eD7ZuOPfDWNegdEPBmrc_ON.fJWpfxeVe3ULcNO19EL77q5pFVJP2QtqoUbZQhg.8fEvimxfIMPSgvVy7dB13_BodbYB2x7jDe9l21pX3zcjtPPLUsnqM47rODbCapUCo",mdrd: "knPC8_MaWePvFSjrh8jcFz6kxNyaIjk2zku95t6SyBY-1739795546-1.2.1.1-JaCb6L2d2a.NL4hks4ON2rxtvVg_UdHCUWJbN4BuRXfIcbZ0vBK9vgDqD_PQLw_yj7BMcmU9lC.igQeWnCO44dKdkDr5cFyvhD3MgYaKVqv75ImnqQGUgFtBDOviL7AXxpkZDcYPLe7CzHyHBa1.OD4bVAUo.SZIZGe__koGQRKCM4cI8cUV.LrKxflgI5QmXDSotxzYllxdAIklts84yzWbb6JSDzeNW9GGtwzo0gswvKCRlf1eVAUb5uEVQi88k4QDm2liLVR_Fqj8bEgg7w89C9Kf1p8fPrbJ_X.Y_SuPuT9DNGvZWNpgdyuzLtUFptXNUe4ozb_IAhLPmoILfFkKcTTD1fdpiXM3AaR35IkHFOZew.IOFrbVRpFjP4qtIgs.7R..q0K04Sj7A06ytyaLQ2YIANMtwf69Ozmh27uNIibN57fnHjAVGsqRL3wtL_UWdMSVTEmjJIVyomoonBH7nYd33ooP3.piNGRLOghBIlnD7IW77wlKYionuqeRLrSv12ve.VAFMIwnKYZn1cKX7wzQYU.zMzypizJyHjLuG6RDS1N6M_GCpK5qL5lG.HvF3vIYp0Ip4RWvD.vlf1BEB8iIvp4cY_KkO9qCsng.tmdfXcK8unGvoT_tKhGB4EcH0OiIpGu7JX8pc1RVjppAG9tatHbbL0k2hGRKae0G1X1QZtqiVO5AwMH4sQuZ5PcLEe98XpMfIk2dxMP3U8im8fD7pB7g8MVJRyqhk.I9MEWtofjLlXMEUbA3eUrP6arUZR.Wbw7W1aXBkgJK7IIz6JQEldIU7boCg2IhVn5nBb5AErMVKOyAPOMN_oTEbsWzbQy1olxY1x1t37OO19q_Od05GuGrYmqHlxPxw_5CUVjJJ.giHm3x9ji2q8ugIEIrm8tN29JjGe2aWGZoqM5JYK00o9WlPWhndTm5IJbNhsthnkcEapdPPFlVD632ghb3DgqL5b98rAoviB_XrNEbtXogTyEw_QSUZ2QgYCouHpYkewaMoG1ZaRNUMxnsUesOo4pQGCS_0DKkeMRohoI4UtaWbYUdc6H_gdDlcjZl4.jAV10YHLEPgUjj1GtCCFR_Jq72F4fr23xNLW5fPH2c.M6HgknEreTaHLrfpipmY9qwWflfF3rFqWPQo.OVN5L4PkD8vDBmsO3tRsMdSSDfMuJJme5J0rV77ncYjWP5jxfKmDlkXEqQ0wsNcEjjgNNPNZI.dJFyllmONCAeeltPzM5GG5TtlEgmMyNNbQjh4yXFHEjicIDR8p_88cmdbvzEqjZUTri.9qKkYu9GXpvgNqiLrqlqrDnch5zLo5KffAnp3ddX0ZgdaGmVSGYA1R9aYLwqbnRm8ahAndDMz44Tflicv3HWhDRnPeVqXn1QS48sZx5zlt1s9Io.jYoWjRC5Fiw4dPNqw.2Q7KkFiqwys2Qv3I4rC0qjQ_agNEhEh3Nx5UzSf4w3CF_J89jgpoHl4sQVNQmyk1LvCxEDOHTsSIfOhNgKNEW5_Mmlh7nGluPuIMskW2YoVF0q1f1nSY5DWLOrqyPizwxpZtrYI2RqxpDrUAPyg7UKZYMyzo.AQmAgqbH5C11tcGOZBWoH3gv74QeTkghLMc5h1z4Uo5CFBcq4xPbAJ.M7s_GZzk2zqEiRCQz17mEwR0s1PlWkGLLm4mU8u9HwKnyzO8WXyXPa0Qio_M3eN3OdoRtYvggZ1UtwM2oZ89AhRS8nTd9ktN1Pg0Kx5NfoYT6x8ZG3.T_rl7KRYSAdZZJZ47pm8ZgdzkpBBKYnspgqeObFT_AgaAaheGC7Ier1Wzbjv5Z903z0GOatgz_qikYsRo6dTb0Ekg06dAbG7rnhJMBVcbJqw0_QZso2IojtkzGf2a0VXnMT34jPrvjbXLcUd1jcMnrwd0gkZXyiBqB8U5BD0qcpEreQDYzvypja21cceZYMEfu.6bNu3k0nkcr1YMQfdJONZ_Qo.JF_LRXsfGuhXXTQWj_q1v7uwuhYwMtVARgj7A"};var cpo = document.createElement('script');cpo.src = '/cdn-cgi/challenge-platform/h/b/orchestrate/chl_page/v1?ray=9135ccd3883444ba';window._cf_chl_opt.cOgUHash = location.hash === '' && location.href.indexOf('#') !== -1 ? '#' : location.hash;window._cf_chl_opt.cOgUQuery = location.search === '' && location.href.slice(0, location.href.length - window._cf_chl_opt.cOgUHash.length).indexOf('?') !== -1 ? '?' : location.search;if (window.history && window.history.replaceState) {var ogU = location.pathname + window._cf_chl_opt.cOgUQuery + window._cf_chl_opt.cOgUHash;history.replaceState(null, null, "\/abstracts\/search?q=tailings%20of%20scheelite&__cf_chl_rt_tk=1MmEPzmZBYSxKW1cP5Eej1Q9fCXljHzwnXj1cJjraHQ-1739795546-1.0.1.1-Li7TqdLroWdeXQZBQDGLn5qgUxeUnItsjPDe6p3JbMw" + window._cf_chl_opt.cOgUHash);cpo.onload = function() {history.replaceState(null, null, ogU);}}document.getElementsByTagName('head')[0].appendChild(cpo);}());</script></body></html>