Tajiri's resource jumped by 80% to 268 million tonnes at 3.3% total heavy minerals, with the contained HM content rising from 4.6Mt to 8.8Mt for 580,000 tonnes of rutile, 5.2Mt of ilmenite and 1.47Mt of almandine garnet.

The resource starts at surface and contains large high-grade domains comprising mostly high-value titanium-dominated mineral assemblage.

Measured resources make up 28% of the total, with 62% in indicated.

The resource remains open, and Strandline expects it to grow.

Strandline managing director Luke Graham said the updated Tajiri resource enhanced the value of the company's mineral sands portfolio and further strengthened the economic outlook for the project.

"Tajiri comprises a world-scale series of coherent high-grade titanium-dominated deposits which all start from surface and are situated favourably to the existing infrastructure at Tanga," he said.

"This last phase of drilling has also confirmed large upside to resources with several deposits remaining open, as well as Strandline recently acquiring new prospective tenure along strike to the south of Tajiri."

Importantly, the company said the project now had critical mass to be able to move to feasibility studies, permitting and partnering discussions.

"Tajiri's valuable mineral mix and scalability provides Strandline with a range of development pathways and options for project feasibility, which are now under strategic review," Graham said.

"Overall the company is ideally placed to capitalise on the growing demand for new mineral sands supplies, with debt funding now secured for the Fungoni project, Tajiri confirmed as a world-scale deposit, and Coburn established as a technically and economically robust Australian project."

Last month, Nedbank CIB signed a credit-approved term sheet to underwrite a US$26 million project finance facility for Fungoni, also in Tanzania.

The Fungoni "starter project" has capital costs of $35 million.

Strandline shares closed at A12.5c yesterday, valuing the company at $45.8 million.