Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal

Greg Mcmahon; L J Cabri; O C Gaspar; R Lastra; G McMahon

Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal

Greg Mcmahon, L J Cabri, O C Gaspar, R Lastra, G McMahon

Research output: Contribution to journal › Article › peer-review

Abstract

The mineralogical distribution of gold in samples from the Corvo orebody, in the Iberian Pyrite Belt of Portugal, was determined in a detailed study of a few hand samples of RT ("rubane tin") ore. In one sample, 42% of the gold occurs invisibly in pyrite I, pyrite TT, and arsenopyrite, with the balance assumed to be carried by cassiterite, which makes up 56.5 wt.% of the sample. Extrapolation of these results to a sample of high-grade tin concentrate (68.99 wt.% Sn) suggests that cassiterite in the concentrate contains about 149 ppb Au, representing 88% of the total gold in the concentrate. These results have implications on the metallogeny of the Neves-Corvo volcanogenic massive sulfide deposit as well as on the metallurgical treatment of the ores.

Original language	English
Pages (from-to)	1347-1360
Number of pages	14
Journal	Canadian Mineralogist
Volume	36
Publication status	Published - 1998

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title = "Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal",

abstract = "The mineralogical distribution of gold in samples from the Corvo orebody, in the Iberian Pyrite Belt of Portugal, was determined in a detailed study of a few hand samples of RT ({"}rubane tin{"}) ore. In one sample, 42% of the gold occurs invisibly in pyrite I, pyrite TT, and arsenopyrite, with the balance assumed to be carried by cassiterite, which makes up 56.5 wt.% of the sample. Extrapolation of these results to a sample of high-grade tin concentrate (68.99 wt.% Sn) suggests that cassiterite in the concentrate contains about 149 ppb Au, representing 88% of the total gold in the concentrate. These results have implications on the metallogeny of the Neves-Corvo volcanogenic massive sulfide deposit as well as on the metallurgical treatment of the ores.",

author = "Greg Mcmahon and Cabri, {L J} and Gaspar, {O C} and R Lastra and G McMahon",

note = "Times Cited: 7 5",

year = "1998",

language = "English",

volume = "36",

pages = "1347--1360",

journal = "Canadian Mineralogist",

issn = "0008-4476",

publisher = "Mineralogical Association of Canada",

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TY - JOUR

T1 - Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal

AU - Mcmahon, Greg

AU - Cabri, L J

AU - Gaspar, O C

AU - Lastra, R

AU - McMahon, G

N1 - Times Cited: 7 5

PY - 1998

Y1 - 1998

N2 - The mineralogical distribution of gold in samples from the Corvo orebody, in the Iberian Pyrite Belt of Portugal, was determined in a detailed study of a few hand samples of RT ("rubane tin") ore. In one sample, 42% of the gold occurs invisibly in pyrite I, pyrite TT, and arsenopyrite, with the balance assumed to be carried by cassiterite, which makes up 56.5 wt.% of the sample. Extrapolation of these results to a sample of high-grade tin concentrate (68.99 wt.% Sn) suggests that cassiterite in the concentrate contains about 149 ppb Au, representing 88% of the total gold in the concentrate. These results have implications on the metallogeny of the Neves-Corvo volcanogenic massive sulfide deposit as well as on the metallurgical treatment of the ores.

AB - The mineralogical distribution of gold in samples from the Corvo orebody, in the Iberian Pyrite Belt of Portugal, was determined in a detailed study of a few hand samples of RT ("rubane tin") ore. In one sample, 42% of the gold occurs invisibly in pyrite I, pyrite TT, and arsenopyrite, with the balance assumed to be carried by cassiterite, which makes up 56.5 wt.% of the sample. Extrapolation of these results to a sample of high-grade tin concentrate (68.99 wt.% Sn) suggests that cassiterite in the concentrate contains about 149 ppb Au, representing 88% of the total gold in the concentrate. These results have implications on the metallogeny of the Neves-Corvo volcanogenic massive sulfide deposit as well as on the metallurgical treatment of the ores.

M3 - Article

SN - 0008-4476

VL - 36

SP - 1347

EP - 1360

JO - Canadian Mineralogist

JF - Canadian Mineralogist

ER -

Distribution of gold in tin-rich samples from the Corvo Orebody, Portugal

Abstract

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