{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2022,4,2]],"date-time":"2022-04-02T20:15:52Z","timestamp":1648930552941},"reference-count":5,"publisher":"FapUNIFESP (SciELO)","issue":"2","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["An. Acad. Bras. Ci\u00eanc."],"published-print":{"date-parts":[[2006,6]]},"abstract":"<jats:p>This work presents a geochemical study of a set of garnets, selected by their colors, from the Camafuca-Camazambo kimberlite, located on northeast Angola. Mantle-derived garnets were classified according to the scheme proposed by Gr\u00fctter et al. (2004) and belong to the G1, G4, G9 and G10 groups. Both sub-calcic (G10) and Ca-saturated (G9) garnets, typical, respectively, of harzburgites and lherzolites, were identified. The solubility limit of knorringite molecule in G10D garnets suggests they have crystallized at a minimum pressure of about 40 to 45 kbar (4-4.5 GPa). The occurrence of diamond stability field garnets (G10D) is a clear indicator of the potential of this kimberlite for diamond. The chemistry of the garnets suggests that the source for the kimberlite was a lherzolite that has suffered a partial melting that formed basaltic magma, leaving a harzburgite as a residue.<\/jats:p>","DOI":"10.1590\/s0001-37652006000200010","type":"journal-article","created":{"date-parts":[[2006,8,9]],"date-time":"2006-08-09T16:25:02Z","timestamp":1155140702000},"page":"309-315","source":"Crossref","is-referenced-by-count":1,"title":["Garnets from the Camafuca-Camazambo kimberlite (Angola)"],"prefix":"10.1590","volume":"78","author":[{"given":"Eug\u00e9nio A.","family":"Correia","sequence":"first","affiliation":[{"name":"Universidade do Porto,  Portugal"}]},{"given":"Fernando A.T.P.","family":"Laiginhas","sequence":"additional","affiliation":[{"name":"Universidade do Porto,  Portugal"}]}],"member":"530","reference":[{"key":"ref1","doi-asserted-by":"crossref","first-page":"841","DOI":"10.1016\/j.lithos.2004.04.012","article-title":"An updated classification scheme for mantle-derived garnet, for use by diamond explorers","volume":"77","author":"GR\u00dcTTER HS","year":"2004","journal-title":"Lithos"},{"key":"ref2","series-title":"Kimberlite Occurrence and Origins: a Basis for Conceptual Models in Exploration","first-page":"143","volume-title":"A correlation between garnets and diamonds","volume":"8","author":"GURNEY JJ","year":"1984"},{"key":"ref3","doi-asserted-by":"crossref","first-page":"263","DOI":"10.1016\/0031-9201(82)90056-5","article-title":"Stability field of knorringite Mg3Cr2Si3O12 at high pressure and its implication to the occurrence of Cr-rich pyrope in the upper mantle","volume":"27","author":"IRIFUNE T","year":"1982","journal-title":"Phys Earth Planet Interiors"},{"key":"ref4","first-page":"21","article-title":"Sur les roches kimberlitiques de la Lunda (Angola)","volume":"26","author":"REAL F","year":"1958","journal-title":"Bol Mus Lab Min Geo Fac Cien Univ Lisb"},{"key":"ref5","first-page":"1","article-title":"Syngenetic inclusions in diamond from the Birim field (Ghana) -a deep peridotitic profile with a history of depletion and re-enrichment","volume":"140","author":"STACHEL T","year":"1997","journal-title":"Contrib Mineral Petrol"}],"container-title":["Anais da Academia Brasileira de Ci\u00eancias"],"original-title":[],"link":[{"URL":"http:\/\/www.scielo.br\/pdf\/aabc\/v78n2\/a10v78n2.pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2017,5,28]],"date-time":"2017-05-28T16:06:38Z","timestamp":1495987598000},"score":1,"resource":{"primary":{"URL":"http:\/\/www.scielo.br\/scielo.php?script=sci_arttext&pid=S0001-37652006000200010&lng=en&tlng=en"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2006,6]]},"references-count":5,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2006,6]]}},"alternative-id":["S0001-37652006000200010"],"URL":"https:\/\/doi.org\/10.1590\/s0001-37652006000200010","relation":{},"ISSN":["0001-3765"],"issn-type":[{"value":"0001-3765","type":"electronic"}],"subject":[],"published":{"date-parts":[[2006,6]]}}}