The gossan of a lead deposit in limestone : Yukon territory
The interpretation of leached outcrops as guides to the specific minerals from which they were formed has been developed to a rather high degree by earlier workers, among whom Boswell and Blanchard deserve particular mention. In the present work, a gossan that led to the discovery of a lead deposit...
Main Author: | |
---|---|
Format: | Thesis |
Language: | English |
Published: |
University of British Columbia
1947
|
Subjects: | |
Online Access: | http://hdl.handle.net/2429/41737 |
id |
ftunivbritcolcir:oai:circle.library.ubc.ca:2429/41737 |
---|---|
record_format |
openpolar |
spelling |
ftunivbritcolcir:oai:circle.library.ubc.ca:2429/41737 2023-05-15T16:00:23+02:00 The gossan of a lead deposit in limestone : Yukon territory MacDonald, Ralph Crawford 1947 http://hdl.handle.net/2429/41737 eng eng University of British Columbia For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. Lead ores -- Dawson mining district Y.T Text Thesis/Dissertation 1947 ftunivbritcolcir 2019-10-15T18:08:58Z The interpretation of leached outcrops as guides to the specific minerals from which they were formed has been developed to a rather high degree by earlier workers, among whom Boswell and Blanchard deserve particular mention. In the present work, a gossan that led to the discovery of a lead deposit is described. Since many hand specimens of the limonite from this gossan lack the characteristic boxwork structures described by the authors above, microscopic investigations of thin and polished sections were carried out. However, the gossan is classified into six types mainly on the basis of its physical properties. At least three of these are correlated with types described by Boswell and Blanchard, one of pyrite derivation and the others from galena. The relative solubility of different limonite types in dilute HC1 was not found to be of as much value as some writers have indicated. The mineral deposits to which the limonite pointed the way have not been sufficiently exposed to allow detailed study, but the presence of tremolite and phlogopite in an area of disseminated mineralization indicates that this portion at least may be of contact metamorphic origin. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate Thesis Dawson Yukon University of British Columbia: cIRcle - UBC's Information Repository Blanchard ENVELOPE(-62.083,-62.083,-64.733,-64.733) Yukon |
institution |
Open Polar |
collection |
University of British Columbia: cIRcle - UBC's Information Repository |
op_collection_id |
ftunivbritcolcir |
language |
English |
topic |
Lead ores -- Dawson mining district Y.T |
spellingShingle |
Lead ores -- Dawson mining district Y.T MacDonald, Ralph Crawford The gossan of a lead deposit in limestone : Yukon territory |
topic_facet |
Lead ores -- Dawson mining district Y.T |
description |
The interpretation of leached outcrops as guides to the specific minerals from which they were formed has been developed to a rather high degree by earlier workers, among whom Boswell and Blanchard deserve particular mention. In the present work, a gossan that led to the discovery of a lead deposit is described. Since many hand specimens of the limonite from this gossan lack the characteristic boxwork structures described by the authors above, microscopic investigations of thin and polished sections were carried out. However, the gossan is classified into six types mainly on the basis of its physical properties. At least three of these are correlated with types described by Boswell and Blanchard, one of pyrite derivation and the others from galena. The relative solubility of different limonite types in dilute HC1 was not found to be of as much value as some writers have indicated. The mineral deposits to which the limonite pointed the way have not been sufficiently exposed to allow detailed study, but the presence of tremolite and phlogopite in an area of disseminated mineralization indicates that this portion at least may be of contact metamorphic origin. Science, Faculty of Earth, Ocean and Atmospheric Sciences, Department of Graduate |
format |
Thesis |
author |
MacDonald, Ralph Crawford |
author_facet |
MacDonald, Ralph Crawford |
author_sort |
MacDonald, Ralph Crawford |
title |
The gossan of a lead deposit in limestone : Yukon territory |
title_short |
The gossan of a lead deposit in limestone : Yukon territory |
title_full |
The gossan of a lead deposit in limestone : Yukon territory |
title_fullStr |
The gossan of a lead deposit in limestone : Yukon territory |
title_full_unstemmed |
The gossan of a lead deposit in limestone : Yukon territory |
title_sort |
gossan of a lead deposit in limestone : yukon territory |
publisher |
University of British Columbia |
publishDate |
1947 |
url |
http://hdl.handle.net/2429/41737 |
long_lat |
ENVELOPE(-62.083,-62.083,-64.733,-64.733) |
geographic |
Blanchard Yukon |
geographic_facet |
Blanchard Yukon |
genre |
Dawson Yukon |
genre_facet |
Dawson Yukon |
op_rights |
For non-commercial purposes only, such as research, private study and education. Additional conditions apply, see Terms of Use https://open.library.ubc.ca/terms_of_use. |
_version_ |
1766396371044139008 |