San Jorge lithium project Source: Greenwing Resources
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  • Greenwing Resources (GW1) expands the brine body area at its San Jorge lithium brine project in Argentina, through a geophysical survey
  • The transient electromagnetic (TEM) geophysical survey uncovered the brine body extending beneath lava flows and gravels west of the salar, and extending up to 2.4 kilometres west of the surface of the salar
  • Brine was also present as deep as 100-150 metres over the salar, and extensions of up to 500 metres deep were found off the salar
  • The company is now working towards a maiden drilling program to commence at the end of the September quarter
  • GW1 shares are up 14 per cent, trading at 24.5 cents as of 12:28 pm AEST

Critical minerals exploration and development company Greenwing Resources (GW1) has expanded the brine body area at its San Jorge lithium brine project in Argentina through a geophysical survey.

The transient electromagnetic (TEM) geophysical survey, made up of 10 lines with 128 TEM stations, defined the brine body extending beneath lava flows and gravels west of the salar, extending up to 2.4 kilometres west of the surface of the salar.

The survey also found brine present as deep as 100-150 metres over the salar, and extensions of up to 500 metres deep off the the salar.

Greenwing says the conductivity responses were 1ohm m or less, which they say is “considered very positive,” for the potential of lithium production.

Outside of the high conductivity zone is an extensive zone which comprises of 1 to 2 ohm m less concentrated brine.

The company is now working towards its maiden drill program at San Jorge, and is currently negotiating a contract with a local company that has experience drilling on salars.

Drilling is expected to begin at the end of the September quarter, focusing on the western and northern margins of the salar, in areas where the survey found brine extends beyond the salar.

Greenwing will drill three diamond holes for around 400 metres, to the estimated bedrock depth, to gain a better understanding of different types of host lithology and confirming the lithium concentrate.

If the results are positive, the company plans to construct access roads onto the salar to begin the next resource drilling program.

“We are extremely pleased to have completed the TEM Electrical Geophysical survey and
defined the full extent of the brine target at the project,” Greenwing Resources CEO Craig Lennon said.

“This information will be used to finalise locations for the phase one drilling program, to confirm the range of lithium concentrations and porosity values in the project.

We look forward to commencing the maiden drilling program when the permit is approved by the Mines Department, amid the continued strong outlook for lithium long term.”

GW1 shares were up 14 per cent, trading at 24.5 cents at 12:28 pm AEST.

GW1 by the numbers
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