REE fractionation and Ce anomalies in weathered Karoo dolerite
- Authors: Marsh, Julian S
- Date: 1991
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145819 , vital:38469 , https://doi.org/10.1016/0009-2541(91)90099-D
- Description: Analyses of samples from a weathering profile on Karoo dolerite allow elements to be divided into three groups depending on their behaviour. Si, K, Na, Mg, Ca, Sr, Ba and V are mobilized and removed from weathered products. Fe, Al. Ti, Zr, Hf, Zn, Cu, Sc, Co and Ni are immobile. REE, Y, and to a lesser extent Cr, are mobile and redistributed within the profile without a net loss of these elements from the profile. Large positive Ce anomalies are developed in oxidized weathered products by preferential leaching of the other REE's. Negative Ce anomalies and REE enrichment is a feature of less altered dolerite.
- Full Text: false
- Date Issued: 1991
- Authors: Marsh, Julian S
- Date: 1991
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/145819 , vital:38469 , https://doi.org/10.1016/0009-2541(91)90099-D
- Description: Analyses of samples from a weathering profile on Karoo dolerite allow elements to be divided into three groups depending on their behaviour. Si, K, Na, Mg, Ca, Sr, Ba and V are mobilized and removed from weathered products. Fe, Al. Ti, Zr, Hf, Zn, Cu, Sc, Co and Ni are immobile. REE, Y, and to a lesser extent Cr, are mobile and redistributed within the profile without a net loss of these elements from the profile. Large positive Ce anomalies are developed in oxidized weathered products by preferential leaching of the other REE's. Negative Ce anomalies and REE enrichment is a feature of less altered dolerite.
- Full Text: false
- Date Issued: 1991
Stop privatisation - Join the campaign
- COSATU
- Authors: COSATU
- Date: June 1991
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/135389 , vital:37263
- Description: Privatisation is when government hands over the management or assets of government services to private interests. Privatised services don't provide well for the poor, who can't pay, because private interests must make profits. Government says it will ensure the poor get good services through contracts and regulations - but it doesn't have capacity to enforce them. Privatisation makes it harder to maintain cross subsidies. Cross subsidies mean rich communities or industry pay more, so that poor households can pay less. Getting rid of cross-subsidies tends to make the prices for services for the poor go up. Privatised companies don't take the broader economic needs of the country into account, for instance by buying goods locally as a way to create jobs, and providing affordable services in remote regions.
- Full Text:
- Date Issued: June 1991
- Authors: COSATU
- Date: June 1991
- Subjects: COSATU
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/135389 , vital:37263
- Description: Privatisation is when government hands over the management or assets of government services to private interests. Privatised services don't provide well for the poor, who can't pay, because private interests must make profits. Government says it will ensure the poor get good services through contracts and regulations - but it doesn't have capacity to enforce them. Privatisation makes it harder to maintain cross subsidies. Cross subsidies mean rich communities or industry pay more, so that poor households can pay less. Getting rid of cross-subsidies tends to make the prices for services for the poor go up. Privatised companies don't take the broader economic needs of the country into account, for instance by buying goods locally as a way to create jobs, and providing affordable services in remote regions.
- Full Text:
- Date Issued: June 1991
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