Chapter Geology, Textural Study, Ore Genesis and Processing of the Tabuaço Tungsten Deposit (Northern Portugal) (Record no. 38227)
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| 000 -LEADER | |
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| fixed length control field | 02923naaaa2200301uu 4500 |
| 001 - CONTROL NUMBER | |
| control field | https://directory.doabooks.org/handle/20.500.12854/70307 |
| 020 ## - INTERNATIONAL STANDARD BOOK NUMBER | |
| International Standard Book Number | intechopen.71674 |
| 024 7# - OTHER STANDARD IDENTIFIER | |
| Standard number or code | 10.5772/intechopen.71674 |
| Terms of availability | doi |
| 041 0# - LANGUAGE CODE | |
| Language code of text/sound track or separate title | English |
| 042 ## - AUTHENTICATION CODE | |
| Authentication code | dc |
| 072 #7 - SUBJECT CATEGORY CODE | |
| Subject category code | PNV |
| Source | bicssc |
| 100 1# - MAIN ENTRY--PERSONAL NAME | |
| Personal name | Foucaud, Yann |
| Relationship | auth |
| 245 10 - TITLE STATEMENT | |
| Title | Chapter Geology, Textural Study, Ore Genesis and Processing of the Tabuaço Tungsten Deposit (Northern Portugal) |
| 260 ## - PUBLICATION, DISTRIBUTION, ETC. | |
| Name of publisher, distributor, etc. | InTechOpen |
| Date of publication, distribution, etc. | 2018 |
| 506 0# - RESTRICTIONS ON ACCESS NOTE | |
| Terms governing access | Open Access |
| Source of term | star |
| Standardized terminology for access restriction | Unrestricted online access |
| 520 ## - SUMMARY, ETC. | |
| Summary, etc. | The Tabuaço tungsten deposit (Northern Portugal) is hosted in the Cambrian Douro Group metasediments, at the northern margin of the Beira-Tabuaço granitic complex. The hosting schisto-calcareous Lower Cambrian Bateiras Formation underwent a contact metamorphism induced by the intrusion of the granitic complex. The skarnification led to the crystallisation of scheelite (CaWO4). Two different skarn facies are encountered: ‘Lower Skarn’ and ‘Main Skarn’ both corresponding to the exoskarn. The ‘Main Skarn’ is mainly composed of vesuvianite (Ca10Mg2Al4(SiO4)5(Si2O7)2(OH)4), feldspars and fluorite. Zoisite, grossular, fluorapatite and scheelite are also present, as well as malayaite and cassiterite. Scheelite is disseminated and often occurs in association with fluorite, albite and vesuvianite. The ‘Lower Skarn’ level contains predominantly diopsidic pyroxene, quartz, zoisite, grossular and feldspars. Scheelite appears both laminated and disseminated, in association with fluorite and vesuvianite in minor proportions. The ‘Main Skarn’ is located in the Garnet, Pyroxene zone, while the ‘Lower Skarn’ corresponds to the Pyroxene, Garnet zone. Pyroxene has a global hedenbergite Hd40 composition. A major phase of albitisation destabilised fluorite, scheelite, vesuvianite, garnet and pyroxene. A late stage of chloritisation is associated with the exhumation. The processing of the Tabuaço ore has been adapted to the Ca-bearing rich paragenesis and to the scheelite mean size. |
| 540 ## - TERMS GOVERNING USE AND REPRODUCTION NOTE | |
| Terms governing use and reproduction | Creative Commons |
| Use and reproduction rights | https://creativecommons.org/licenses/by/3.0/ |
| Source of term | cc |
| -- | https://creativecommons.org/licenses/by/3.0/ |
| 546 ## - LANGUAGE NOTE | |
| Language note | English |
| 650 #7 - SUBJECT ADDED ENTRY--TOPICAL TERM | |
| Topical term or geographic name entry element | Mineralogy & gems |
| Source of heading or term | bicssc |
| 653 ## - INDEX TERM--UNCONTROLLED | |
| Uncontrolled term | skarn, scheelite, texture, paragenesis, processing |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Filippov, Lev |
| Relationship | auth |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Lechenard, Bénédicte |
| Relationship | auth |
| 700 1# - ADDED ENTRY--PERSONAL NAME | |
| Personal name | Marion, Philippe |
| Relationship | auth |
| 773 10 - HOST ITEM ENTRY | |
| Host Biblionumber | OAPEN Library ID: ONIX_20210602_10.5772/intechopen.71674_387 |
| Control subfield | nnaa |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Host name | www.oapen.org |
| Uniform Resource Identifier | <a href="https://library.oapen.org/bitstream/20.500.12657/49273/1/57812.pdf">https://library.oapen.org/bitstream/20.500.12657/49273/1/57812.pdf</a> |
| Access status | 0 |
| Public note | DOAB: download the publication |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Host name | www.oapen.org |
| Uniform Resource Identifier | <a href="https://library.oapen.org/bitstream/20.500.12657/49273/1/57812.pdf">https://library.oapen.org/bitstream/20.500.12657/49273/1/57812.pdf</a> |
| Access status | 0 |
| Public note | DOAB: download the publication |
| 856 40 - ELECTRONIC LOCATION AND ACCESS | |
| Host name | www.oapen.org |
| Uniform Resource Identifier | <a href="https://directory.doabooks.org/handle/20.500.12854/70307">https://directory.doabooks.org/handle/20.500.12854/70307</a> |
| Access status | 0 |
| Public note | DOAB: description of the publication |
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