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The geochemistry of ore fluids and control of gold mineralization in banded iron-formation at the Kalahari Goldridge deposit, Kraaipan greenstone belt, South AfricaHammond, Napoleon Quaye January 2003 (has links)
The Kalahari Goldridge mine is located within the Archaean Kraaipan Greenstone Belt about 60 km SW of Mafikeng in the Northwestern Province, South Africa. Several gold deposits are located within approximately north - south-striking banded iron-formation (BIF). Current opencast mining operations are focused on the largest of these (D Zone). The orebody is stratabound and hosted primarily in the BIF, which consists of alternating chert and magnetite-chloritestilpnomelane-sulphide-carbonate bands ranging from mm to cm scale. The ore body varies in thickness from 15 to 45 m along a strike length of about 1.5 km. The BlF is sandwiched between a sericite-carbonate-chlorite schist at the immediate footwall and carbonaceous meta-pelites in the hanging-wall. Further west in the footwall, the schists are underlain by mafic meta-volcanic amphibolite. Overlying the hanging-wall carbonaceous metapeiites are schist units and meta-greywackes that become increasingly conglomeratic up the stratigraphy. Stilpnomelane-, chlorite- and minnesotaite-bearing assemblages in the BlFs indicate metamorphic temperatures of 300 - 450°C and pressures of less than 5 kbars. The BIF generally strikes approximately 3400 and dips from 60 to 75°E. Brittle-ductile deformation is evidenced by small-scale isoclinal folds, brecciation, extension fractures and boudinaging of cherty BIF units. Fold axial planes are sub-parallel to the foliation orientation with sub-vertical plunges parallel to prominent rodding and mineral lineation in the footwall. Gold mineralization at the Kalahari Goldridge deposit is associated with two generations of subhorizontal quartz-carbonate veins dips approximately 20 to 40°W. The first generation consists of ladder vein sets (Group lIA) preferentially developed in Fe-rich meso bands, whilst the second generation consists of large quartz-carbonate veins (Group lIB), which crosscut the entire ore body extending into the footwall and hanging-wall in places. Major structures that control the ore body are related to meso-scale isoclinal folds with fold axes subparallel to mineral elongation lineations, which plunge approximately 067°E. These linear structures form orthogonal orientation with the plane of the mineralized shallowdipping veins indicating stretching and development of fluid - focusing conduits. A second-order controlling feature corresponds to the intersection of the mineralized veins and foliation planes of host rock, plunging approximately 008°N and trending 341°. G0ld is closely associated with sulphides, mainly pyrite and pyrrhotite and to a lesser extent with bismuth tellurides, and carbonate gangue. The ore fluid responsible for the gold deposition is in the C-O-H system with increased CH₄ contents attributed to localized hydrolysis reaction between interbedded carbonaceous sediment and ore fluid. The fluid is characterized by significant C0₂ contents and low salinities below 7.0 wt % NaCl equivalent (averages of 3.5 and 3.0 wt % NaCl equivalent for the first and second episodes of the mineralization respectively) . Calculated values of f0₂. ranging from 10⁻²⁹·⁹⁸ to 10⁻³²·⁹⁶ bars, bracket the C0₂-CH₄ and pyrite-pyrrhotite-magnetite buffer boundaries and reveal the reducing nature of the ore fluid at deposition. Calculated total sulphur content in the ore fluid (mΣs), ranges from 0.011 to 0.018M and is consistent with the range (10⁻³·⁵ to 10⁻¹M) reported for subamphibolite facies ore fluids. The close association of sulphides with the Au and nature of the fluid also give credence that the Au was carried in solution by the Au(HS)₂ - complex. Extensive epigenetic replacement of magnetite and chlorite in BIF and other meta-pelitic sediments in the deposit by sulphides and carbonates, both on meso scopic and microscopic scales gives evidence of an interaction by a CO₂- and H₂S-bearing fluid with the Fe-rich host rocks in the deposit. This facilitated Au precipitation due to changes in the physico-chemical conditions of the ore fluid such as a decrease in the mΣs and pH leading to the destabilization of the reduced sulphur complexes. Local gradients in f0₂ may account for gold precipitation in places within carbonaceous sediments. The fineness of the gold grams (1000*Au/(Au + Ag) ranges from 823 to 921. This compares favourably with the fineness reported for some Archaean BIFhosced deposits (851 - 970). Mass balance transfer calculations indicate that major chemical changes associated with the hydrothermal alteration of BIF include enrichment of Au, Ag, Bi, Te, volatiles (S and CO₂), MgO, Ba, K and Rb but significant depletion of SiO₂ and minor losses of Fe₂O₃. In addition, anomalous enrichment of Sc (average, 1247%) suggests its possible use as an exploration tool in the ferruginous sediments in the Kraaipan greenstone terrane. Evidence from light stable isotopes and fluid inclusions suggests that the mineralized veins crystallized from a single homogeneous fluid source during the two episodes of mineralization under the similar physicochemical conditions. Deposition occurred at temperatures rangmg from 350 to 400°C and fluid pressures ranging from 0.7 to 2.0kbars. Stable isotope constraints indicate the following range for the hydrothermal fluid; θ¹⁸H₂O = 6.65 to 10.48%0, 8¹³CΣc = -6.0 to -8.0 %0 and 8³⁴SΣs = + 1.69 to + 4.0%0 . These data do not offer conclusive evidence for the source of fluid associated with the mineralization at the Kalahari Goldridge deposit as they overlap the range prescribed for fluid derived from devolatization of deep-seated volcano-sedimentary piles near the brittle-ductile transition in greenstone belts during prograde metamorphism, and magmatic hydrothermal fluids. / KMBT_363 / Adobe Acrobat 9.54 Paper Capture Plug-in
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Conservation manager's perceptions regarding biodiversity in the North-West Parks and Tourism BoardLesejane, Moremi Daniel 19 December 2007 (has links)
Biodiversity perceptions of conservation managers in the North West Parks and Tourism Board are "teased out" to find how they view biodiversity issues in general and also how they perceive the functioning of their organisation. This report is the discussion and interpretation of responses to the questionnaire by managers at different ranks of the organisational structure. The results intend to show areas where the organisation is seen to be doing well and where it seen to be lacking. The tables and the appendices are used to indicate trends if any between high level managers and lower level managers (which level tends to rate the organisation lower or higher most of the time). / Dissertation (M Inst Agrar ( Sustainable Ecological Management))--University of Pretoria, 2007. / Zoology and Entomology / unrestricted
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The sisters of Saint Ann : their contribution to education in the Pacific Northwest, 1858-1958Down, Edith Emily January 1962 (has links)
When the Sisters of Saint Ann arrived in Victoria, B.C. on June 8, 1858, they were the first religious order of women to set foot in the territory north of the forty-ninth parallel. The history of their activities and their contribution to education during the first one hundred years of their existence in the west is the specific study of this present work. Histories dealing with the development of the west make reference to their coming but no complete record of their story has been made.
Since the work of Catholic Education in British Columbia, the Yukon and Alaska commenced with the foundation of the Church in these parts, a background study of the early missionaries and the establishment of the Diocese of Vancouver Island was included. This led to the investigation necessary to confirm the time of establishment of the first Catholic School. The conclusion was reached that a Catholic School was in existence in 1849 and that it opened simultaneously with the one started in 1849 by Reverend R. Staines in the Hudson's Bay Fort.
The arrival of the Sisters at the peak of the Gold Rush fever, their success in the first Convent School in Victoria, B.C. and the courage of the individuals who made up the first little missionary band is a study that adds colour to the early picture of the history of British Columbia and the Northland. In the beginning, the need was for schools to christianize and educate the children of the primitive Indians. The Sisters of Saint Ann answered the call and soon they were staffing schools in Duncan on Vancouver Island and at New Westminster and St. Mary's Mission on the mainland. However, almost simultaneously with this type of work, the sudden opening up of the country in these parts created a demand for the education of the children whose parents came west for the various reasons that history relates. This need brought an increased number of Sisters from the Motherhouse in Lachine and it also led to the opening of a novitiate in Victoria, B.C. where young girls could be trained for the Sisterhood. Consequently the Sisters of Saint Ann organized primary, elementary and High Schools at focal points throughout this vast territory.
The increased enrolment from thirty pupils in 1858 at Victoria, B.C., to over six thousand in 1958 in thirty-four establishments throughout British Columbia, the Yukon and Alaska shows the extent the works of the Sisterhood reached. A study was made of the methods of teaching adopted by the Institute, the success of the schools because of better teacher-training and advanced educational methods.
The study included an investigation of the first programme of studies organized at the Motherhouse in Lachine, Quebec, and adapted from the Ontario system of Education. As the Province of British Columbia developed its own teacher-training centres and its own university, the programme of studies of the Sisters of Saint Ann was changed in 1907 in favour of that of the Department of Education of British Columbia and that of Alaska and the Yukon respectively. The successes of students was noted and a survey of departmental examination results was tabulated. In addition, a sample of students in various walks of life who have achieved success and honours was taken. The results obtained from these investigations are an assurance of the excellence of performance in education of the Sisters of Saint Ann. Together with these investigations a study of the Mothers Provincial who administered the works of the province within the first one hundred years, as well as the educational leadership of the Prefects of Studies was essential to show the reasons for the success and continued vitality of the work of the Sisters of Saint Ann in British Columbia, the Yukon and Alaska. / Education, Faculty of / Graduate
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Secondary school learners' experience of citizenship in a democratic South AfricaTlhapi, Thekiso Japhta 30 November 2006 (has links)
The aim of this study was to explore how the newly acquired democratic dispensation in South Africa has affected the lives of secondary school learners. A literature review was undertaken on democracy, democratic citizenship and democratic government. An empirical investigation using a qualitative phenomenological approach examined the situation of secondary school learners using the various agencies of citizenship, namely the family, peer groups, the school and the community. Data was gathered by focus group interviews. It emerged from the examination of the collected data that democratic citizenship has improved the situation of secondary school learners regarding their interpersonal relationships with their families, peer groups, school-mates and other members of the community at large. However, the findings indicated that the democratic dispensation has not yet had a significant impact on the situation of secondary school learners at school and in their communities. / Educational Studies / M.Ed. (Philosophy of Education)
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The effects of water scarcity on rural livelihoods: a case study of Borakalalo village in Lehurutshe (North West Province)Tabane, Lydia Ikgopoleng January 2017 (has links)
Thesis (M.Sc.)--University of the Witwatersrand, Faculty of Science, School of Geography, Archaeology & Environmental Studies, 2016. / The aim of this thesis is to expose the effects of water scarcity on rural livelihoods. The chosen study site for this investigation is Borakalalo village in Lehurutshe region (North West Province). The aim of this study was to explore the water usage patterns of households in Borakalalo village in order to unpack the various water-related activities that households in Borakalalo engage with. The main argument made in this thesis is that in order to comprehend the effects of water scarcity on rural livelihoods, it is paramount that the water usage trends of rural dwellers be documented and, the contribution made by various water-related activities in generating a livelihood income be scrutinised. Therefore, using the sustainable rural livelihood framework of analysis, the goal of this study was to investigate the role that water plays in securing a livelihood for households in Borakalalo village.
The introduction chapter explains the relevance of this study in the context of South Africa as a whole, also paying special attention to Borakalalo village, which is the chosen study site for this investigation. The methodology chapter highlights the advantages and disadvantages of methodological techniques employed in this study. A critical engagement with literature on water scarcity reveals some of the key conceptual dilemmas in defining water scarcity. Furthermore, the social, political and economic impacts of water scarcity on a global and national scale are looked into. A household survey that was conducted with 150 households in Borakalalo village aimed to uncover the water usage trends of rural households and, to examine how water serves the livelihoods of households in Borakalalo village. In the discussion chapter some of the main findings in this investigation are brought forth through looking at the ways in which water-related activities such as agriculture, livestock herding and small water-related rural enterprises sustain rural livelihoods.
Although the discussion uncovers the role of water in a productivist rural economy, the results also seem to suggest that there is a shift in the rural economy from productivist to post-productivist livelihood activities. Henceforth, as much as water scarcity poses a threat to productivist livelihood activities, it also limits the expansion of the emerging post-productivist rural livelihoods. Furthermore, the increased need for monetary income in rural households in order to compensate for the loss of productive rural activities is evident.
However, high levels of unemployment in rural areas limit the capacity of rural households to generate monetary income, and henceforth, livelihoods in Borakalalo village are enormously threatened by current water shortages in the village. / MT2016
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The influence of knowledge and attitudes regarding HIV and AIDS on entrepreneurial activities in the North-West province.Kulati, Tozama January 2013 (has links)
M.Tech. Business Administration. Business School.
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Personnel expenditure analysis of the Directorate Veterinary Services in the North West Province / Boitshoko R NtshabeleNtshabele, Boitshoko R January 2004 (has links)
The purpose of this study was to analyse personnel expenditure of the Directorate
Veterinary Service in the North West Province and how it impacted on service delivery.
Literature on personnel expenditure and its influence on service delivery, particularly in
the field of Veterinary Services is still in its infancy. Financial condition was referred as a
tool to evaluate trends and patterns in how personnel budgets increases over a period of
time as a fraction of the total budget affected the ability of the directorate to deliver
services to the citizens of the province. Financial condition uses a percentage change to
analyse changes in the budget over time for the Directorate.
Budget reports (2000-2002) collected from the Provincial Department of Agriculture,
Conservation and Environment was analyzed in terms of a split between personnel and
operational. This analysis was then used to elucidate patterns over time for the
Directorate as a whole, which were then compared between the regions (using cost
centers) to determine any bias in terms of resource allocation. The percentage change was
also done per standard budget item used in the Province.
From the study it is evident that there was deterioration in financial condition for the
financial year 200112001. This deterioration in financial condition is shown by a drop in
budget but also in terms of a bias towards personnel. This phenomenon was however
reversed in the following year of 2002/2003.
This study has identified a negative correlation between personnel budget and other
expenditure,:, needs for the Directorate Veterinary Services that had negative consequences
for service delivery. To this extent it recommends a regular monitoring process to be put
in place and the use of public partnerships where practical as a solution to rising
personnel costs.
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Personnel expenditure analysis of the Directorate Veterinary services in the North West / Boitshoko R. NtshabeleNtshabele, Boitshoko R January 2004 (has links)
The purpose of this study was to analyse personnel expenditure of the Directorate
Veterinary Service in the North West Province and how it impacted on service delivery.
Literature on personnel expenditure and its influence on service delivery, particularly in
the field of Veterinary Services is still in its infancy. Financial condition was referred as a
tool to evaluate trends and patterns in how personnel budgets increases over a period of
time as a fraction of the total budget affected the ability of the directorate to deliver
services to the citizens of the province. Financial condition uses a percentage change to
analyse changes in the budget over time for the Directorate.
Budget reports (2000-2002) collected from the Provincial Department of Agriculture,
Conservation and Environment was analysed in terms of a split between personnel and
operational. This analysis was then used to elucidate patterns over time for the
Directorate as a whole, which were then compared between the regions (using cost
centers) to determine any bias in terms of resource allocation. The percentage change was also done per standard budget item used in the Province.
From the study it is evident that there was deterioration in financial condition for the
financial year 200112001. This deterioration in financial condition is shown by a drop in
budget but also in terms of a bias towards personnel. This phenomenon was however
reversed in the following year of 2002/2003.
This study has identified a negative correlation between personnel budget and other
expenditure needs for the Directorate Veterinary Services that had negative consequences for service delivery. To this extent it recommends a regular monitoring process to be put in place and the use of public partnerships where practical as a solution to rising personnel costs. / (M.B.A.) North-West University, Mafikeng Campus, 2004
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A sociological evaluation of access and participation of the SMME sector in the North West Province tourism industry / Leratang Mack Victor MagodieloJanuary 2005 (has links)
Small, Micro and Medium Enterprises (SMMEs) are often perceived as the backbone
of an economy. There is widespread consensus on their significant contribution to
economic growth, employment creation, poverty alleviation and local and regional
development.
In South Africa, a lack of access to funding, especially to the Previously
Disadvantaged Individuals (PDIs), often hinders small businesses from developing
their full potential. Funding limitation of SMMEs is mainly due to the high risk
attributed to small businesses and their lack of collateral. The fact that SMMEs
often receive inadequate financial support or the total lack of it puts them at a
competitive disadvantage and tend to harm their long-term growth and
development, a waste of entrepreneurial resources and edge, a reduction of
productivity and a lower economic growth rate. Restricted access to funding is one
of the main problems faced by tourism-related SMMEs in the North West Province,
and can ultimately have an adverse effect on economic growth and overall welfare of
the people.
This research study presents a sociological evaluation of SMME access and
participation in the North West Province, South Africa, tourism industry. The study
appeals to an outcome-based evaluation approach of measuring and assessing the
degrees and levels to which tourism SMMEs, since the all-inclusive 1994
democratic elections in South Africa, have benefitted . or otherwise from the
provincial tourism industry.
The study reveals that, ten years after the fall of apartheid, black entrepreneurs'
access and participation in the provincial tourism industry, is still limited due to
stringent qualification criteria that serve as barriers to accessing financial and
developmental support needed to enhance and fast-track meaningful participation
in the tourism industry, particularly in the North West Province.
The virtual failure to help small business entrepreneurs creates a great controversy
about their very existence and effectiveness of such financial institutions with the
task of helping up-and-coming black entrepreneurs. This thesis stresses the need
for comprehensive evaluation of such institutions so that their existence would have
a meaning, more importantly to the PDIS within the tourism industry. The
criticisms levelled against these financial support institutions are extensively
explored in this study.
In conclusion, the study recommends that, in order to make use of the full potential
of small business entrepreneurs in the provincial tourism industry, thereby
participating meaningfully in the industry, there is the need to provide them with
an enabling environment, which encompasses the access to capital and relaxation
of the set qualification criteria for financial support. / (M.Soc.Sc.) North-West University, Mafikeng Campus, 2005
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Fertility differentials between migrants and non-migrants in the North West Province / Paul BigalaBigala, Paul January 2004 (has links)
The aim of this study was to examine the fertility differentials between migrants and non-migrants in the North West province of South Africa. Evaluation of fertility behavior of
migrants at the destination area and the causes of fertility differentials of migrants and
non-migrants was also undertaken. Data used in · this study were obtained from the 1996
Census and the 1998 South African Demographic and Health Survey.
It was found that migrant behavior at the destination areas tends to be influenced by the
new environment, which motivated them to, adapt to the norms and values that would
affect their fertility.
Although South Africa has a lower fertility rate than to the rest of Sub Saharan Africa, It
appeared that fertility differentials have existed between migrants and non-migrants.
Fertility was higher among migrants than non-migrants and the difference between the
two population groups has declined between 1996 and 1998.
However fertility differentials were vividly observed with respect to Education, income
age and employment status among both migrants and non-migrants in 1996 and income
and age at first intercourse among both migrants and non-migrants in 1998.
The study concludes by recommending that further research be done particularly on the
issue of ethnicity and its impact on fertility since there is no concrete evidence to suggest
that there is any marked link between migrants and non-migrants. Also, this kind of
research should be done in other provinces to establish the state of migrant and non-migrant fertility and any variations among different socio-economic and demographic
groups of Household society.
Furthermore, Education should be universalized as a powerful tool to regulate fertility as
it has shown to affect fertility, particularly in areas where fertility is still relatively high
among both migrants and non-migrants. / (M.Soc.Sc.) North West University, Mafikeng Campus, 2004
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