Dr Mariano inspecting the nature of the breccia waste rock. Source: Dateline Resources
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  • Dateline Resources (DTR) confirms lab analysis showing fenite outcrops within the Colosseum claim boundary as reported by the company’s REE and carbonatite experts, Dr Anthony N. Mariano and Mr Anthony Mariano Jr
  • In the February 2022 findings that were submitted to the company by the Mariano duo, they note multiple mantle derived rock outcrops observed over 1.6 kilometres (km) with the possibility of large underlying carbonatite occurrence
  • The findings shows future work to map the Colosseum claim area for the presence of these lithologies and investigate the possibility of structural controls related to their emplacement is needed
  • Dateline confirms its intention to complete a detailed mapping program across all the claims in Q2 2022, before planning a drilling program
  • DTR shares are up four per cent, trading at 13 cents

Dateline Resources (DTR) has confirmed lab analysis showed fenite outcrops within the Colosseum claim boundary as reported by the company’s REE and carbonatite experts, Dr Anthony N. Mariano and Mr Anthony Mariano Jr.

In the February 2022 findings that were submitted to the company by the Mariano duo, they noted multiple mantle derived rock outcrops observed over 1.6 kilometres with the possibility of large underlying carbonatite occurrence.

“The presence of lithologies associated with mantle derived systems such as the Mountain Pass Alkaline-Carbonatite system have not only been confirmed to exist in the Colosseum claim area, but additional previously unknown outcrop occurrences have been found through this field investigation,” said Mr Mariano Jr.

“The occurrence of multiple outcrops of these lithologies at a distance of almost a mile apart within the Colosseum claims suggest the possibility of a large underlying alkaline carbonatite occurrence.”

The geological team visited a number of prospects and outcrops within the Colosseum claims during the site visit.

The duo have been mapping, sampling and advising on REEs in the Mountain Pass area for over 50 years.

Four samples were collected and submitted for laboratory analysis with lab results (ICP/MS) showing the relative lanthanide distribution of the rare earth elements for three of the five samples analysed to be similar to rocks associated with carbonatite complexes.

As well as the ICP/MS analysis, the samples were also subject to petrographic and cathodoluminescence analysis (CL) which revealed brilliant red luminescence in the feldspars from Ferric ion activation, typical of fenites.

The findings showed that future work to map the Colosseum claim area for the presence of these lithologies and investigate the possibility of structural controls related to their emplacement is the next step.

Dateline confirmed it intends to complete a detailed mapping program across all the claims in Q2 2022, before planning a drilling program.

DTR shares were up four per cent, trading at 13 cents as of 10:32 am AEST.

DTR by the numbers
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