Data release [made at SA Director of Mines’ discretion] : Warcowie and Kanyaka (later part of the Springfield Project). Progress and annual reports to the commencement of project licences' joint reporting, for the period 15/7/1994 to 13/10/2001.
Created: 12 Nov 2024 Revised: 12 Nov 2024

Exploration Licenses 1947 (Druid Range) and 1948 (Kanyaka) are in the western central part of the Proterozoic to Cambrian Adelaide Geosyncline approximately 70 – 110 km north-east of Port Augusta, close to the town of Hawker. In a regional...

Exploration Licenses 1947 (Druid Range) and 1948 (Kanyaka) are in the western central part of the Proterozoic to Cambrian Adelaide Geosyncline approximately 70 – 110 km north-east of Port Augusta, close to the town of Hawker. In a regional context, the South Flinders Ranges have been the focus of sustained diamond exploration interest since Stockdale Prospecting Limited discovered the Eurelia kimberlite dyke swarm during the period between the late 1960s and late 1970s. The Eurelia dykes are located 65 to 75 kilometres south-southeast of Hawker and comprise thirteen Jurassic micaceous kimberlite dykes which trend in a north-westerly direction. During the initial 6 months of tenure, exploration activities over the tenements included a detailed desktop review of existing open-file company reports and historical exploration data, a structural study of the project area, field reconnaissance/mapping and bulk stream sediment sampling. In total 5 bulk stream sediment samples were collected in and marginal to the tenement boundaries, to verify the results of earlier explorers, and to test the effectiveness of sampling techniques and to identify indicator trails that would indicate shedding from within the tenements. The recent structural interpretation of the project has highlighted extensional faults associated in part with kimberlite indicator mineral occurrence in nearby active drainage. These fault zones have not formed the basis of previous exploration philosophy and have therefore not been adequately tested for intrusions related to possible kimberlite emplacement. On the basis of previous survey work any primary source is unlikely to possess a discernible magnetic signature and therefore future exploration will probably rely on detailed mineral-graphic surveys guided by structural and geomorphological analysis. Exploration work in the 6-month period to 14th July 1996 exploration activities on EL 1948 Kanyaka saw Amity International Ltd the collection and processing of 75 stream sediment samples and 3 bulk loam samples to produce a heavy mineral concentrate. The concentrates produced underwent analysis that included stereo-microscope analysis and semi-quantitative SEM work. Several identified indicator minerals underwent microprobing including comparative probing of picroilmenite from the Springfield Basin. One rock sample was collected for petrographic analysis. Results conformed the results of earlier exploration in the Calabrinda Creek drainage, with the indicator mineral trails refined upstream. Four further areas (Hunt Hill, CC050, CC053 & Wilson Valley) were highlighted for diamond exploration. An area of ~20 square-km was also identified at Kanyaka Hill for base metal prospectivity. During the same reporting period on Druid Range no work was undertaken, with the focus being on proofing the earlier completed structural study within Kanyaka along Calabrinda Creek before moving into the more rugged Druid Range EL 1947. In the reporting period to 14th July 1997, comprehensive stream gravel (71), grid loam (49) and rock chip (6) sampling was carried out around the previously identified anomalies, plus the acquisition and interpretation of aerial photography. Processing and detailed analysis of these samples, including heavy mineral analysis and microprobing was undertaken. Detailed and general geological mapping was undertaken. Stream sediment samples were collected at 50 m interval upstream of previous positive sample sites, and at 100 m spacing along the eastern (negative) branch of the creek. Work to date has resulted in the discovery of a very decomposed, kimberlite indicator bearing rock in the upper Calabrinda drainage, with a similar situation thought likely to exist at the Hut Hill anomaly. Ground work during sampling has revealed that remnants of ancient land surfaces which Amity believe may have played a role in preserving the source of the indicators, and restricting the amount shed into the catchment. A number of samples returned minerals of interest in respect to base metals. In the 6 months to 14th July 1998 for EL 1948 and EL 2050 Amity undertook detailed griding, ground magnetics and geological mapping over the Calabrinda, Hut Hill and Pine Flat Swamp anomalies. They collected 1800 kg of a bulk sample from Calabrinda. A further 47 stream sediments, 1 loam and 10 decomposed rock samples were collected from across the anomalies. Ground magnetic surveys were completed over 3 anomalies along with geological mapping, at 25 m x 10 m intervals (Calabrinda), 25 m x 100 m (Hut Hill) and 50 m x 100 m (Pine Flat Swamp). Work to date has resulted in the delineation of a weathered and oxidised polymictic breccia at the Calabrinda Anomaly, possibly related to diatreme development. A single micro diamond measuring 0.3 x 0.18 x 0.125 mm was recovered from the Calabrinda breccia and is considered diamondiferous. This breccia has close textural similarities to the Argyle Lamproite, (“sandy tuff”, Western Australia), the Bakwanga Kimberlite (“polymictic kimberlite tuff”, Zaire), and the Camatue Kimberlite (“polymictic kimberlite tuff”, Angola). The survey showed that the Calabrinda breccia is marked by a 40 gamma “low” within the area of no outcrop. In the 6 months to March 1999 for EL 1948, Tiger International signed a JV agreement with Amity, and the reporting covers the work completed by Tiger. Fifteen gravel/loam/rock samples from across all the prospects for indicator mineral sampling, while geological mapping at Calabrinda and Hut Hill was undertaken at the 1:2500 scale [results included in the report]. A total of 45 aircore/RAB bedrock exploratory holes for a total of 1040 m were completed in in December 1998, with 38 holes for 798 m at Hut Hill (20 m spacing extended out to 40 and 80 m), 4 holes for 117 m at Calabrinda, and 3 holes for 125 m at the Wilson Valley prospect. Mineral processing and mineralogical observations of drill samples (26) and the assaying of 155 samples for incompatible trace elements (Nb, La, Ce, Zr, Ni, Ba, Sr and Rb) was also completed. A single costean 100 m long by 5 m deep was constructed at Calabrinda to cut the topographic low/anomaly, however the walls collapsed rendering it too unsafe for detailed investigations. Four rock samples were sent for petrological analysis. Drilling at Calabrinda Prospect has proven that the topographic low is not a large kimberlitic intrusive, but a karstic micro-basin filled with fluvial and lacustrine sediments of possibly Pleistocene age, intermixed with kimberlitic indicator minerals. In the reporting period to 13th October 2000, for EL 2656, Flinders Diamonds Ltd commissioned an independent geological review by Ms Maureen Muggeridge of all its holdings including EL2656. The review resulted in confirmation of the potential of the Hut Hill prospect near where some kimberlitic indicators have been located and drill testing is recommended. In the reporting period to 13th October 2001, no new technical work was carried out while Flinders Diamonds was preoccupied with its share market float.

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About this record

Record No mesac25767
Topic Geoscientific Information
Type of Resource Document
Category Type
Document Type Mineral Company Report - Mineral Exploration
Contributor Allender Exploration;Diatech Heavy Mineral Services;Mintek Services;Pontifex and Associates Pty Ltd;Independent Diamond Laboratories;GEMOC ARC National Key Centre, Department of Earth and Planetary Sciences, Macquarie University
Sponsor
Tenement
Tenement Holder Savanna Mineral Resources NL;Amity International Pty Ltd;Tiger International Resources Inc.;Flinders Diamonds Ltd
Operator Savanna Mineral Resources NL;Amity International Pty Ltd;Tiger International Australia Pty Ltd;Flinders Diamonds Ltd
Geological Province Adelaide Geosyncline
Mine Name Hut Hill prospect;Calabrinda prospect;Calabrinda costean CT01
Stratigraphy
Commodity diamond
Notes
Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88...

Notes: This release to the public of the subject mineral exploration data, namely, company data which was acquired more than 5 years ago, is being done by DMITRE in accord with the provisions of Section 77D of the Mining Act 1971 and Regulation 88 of the Mining Regulations 2011. 100% ownership of Kanyaka EL 1948 was transferred from Savanna Mineral Resources NL to Amity International Pty Ltd in November 1995. During 1998, Tiger International Resources Inc. signed an option agreement with Amity International that would allow it to earn a 75% equity in EL 1948 through meeting $1.25 million of exploration expenditure. Subsequently, ownership of the renewed Kanyaka EL 2656 passed from Amity International to Flinders Diamonds Limited under a purchase agreement dated 12/9/2000, which was approved by the SA Minister of Mines on 3/10/2000. Includes: - Borner, J.E., Petrographic Report 39502. Sample Number CR-02. October 1997. Appx. 1 to EL 1948 – Annual Technical Report – to 14th July 1998. - Pontifex, I.R., Mineralogical Report No. 7764. January 1999. Appx. 4 to EL 1948 – Annual Technical Report – March 1999. Geographic Locality: Southern Flinders Ranges;Druid Range;Warcowie Station;Waraco Creek;Maraby Creek;Black Jack Range;Kanyaka Hill;Cudlamudla;Calabrinda Creek;Radford Creek;Yappala Range;Wilson Valley;Partacoona Homestead;Simmonstown - Hawker Lineament;1981 Quorn - Hawker Aerial Magnetic Survey Doc No: Env 08856 Drillhole: HP01 - HP38;CP01 - CP04;WV01 - WV03

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Language English
Metadata Standard ISO 19115-3

Citations

Use constraints License
License Creative Commons Attribution 4.0
Persistent identifier https://pid.sarig.sa.gov.au/document/mesac25767
Citation Moore, J.J.;Borner, J.E.;Howard, J.P.;Pontifex, I.R.;Frewer, L.;Muggeridge, M.;Griffin, W.L.;Wills, K.J.A. Data release [made at SA Director of Mines’ discretion] : Warcowie and Kanyaka (later part of the Springfield Project). Progress and annual reports to the commencement of project licences' joint reporting, for the period 15/7/1994 to 13/10/2001. Mineral Company Report - Mineral Exploration
https://pid.sarig.sa.gov.au/document/mesac25767

Technical information

Status
Maintenance and Update Frequency
Geographic Reference GDA2020 (EPSG:7844)
Geo bounding box {"type":"Polygon","coordinates":[[[138,-32.5],[139,-32.5],[139,-31.5],[138,-31.5],[138,-32.5]]]}
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