Proactiveinvestors Australia Lepidico Ltd Proactiveinvestors Australia Lepidico Ltd RSS feed en Wed, 19 Jun 2019 23:19:57 +1000 Genera CMS (Proactiveinvestors) (Proactiveinvestors) <![CDATA[News - Lepidico’s drilling indicates larger lithium resource in Portugal ]]> Lepidico Ltd (ASX:LPD) has revealed assay results from its late 2018 resource drill program at the Alvarrões Lepidolite Mine near the city of Guarda in Portugal.

The diamond drill program comprised 25 holes for about 1,677 metres.

Notably, all drill holes intersected lepidolite-bearing pegmatites, with lepidolite content averaging about 15% of the pegmatite sills.

Best results include 2.38 metres at 2.54% lithium oxide, 2.64 metres at 1.76% lithium oxide, 2.45 metres at 1.95% lithium oxide and 3.80 metres at 1.35% lithium oxide.

Drill hole collar location plan showing resource drill holes (2018) as yellow dots and initial drill holes (2017) as black dots.

The aim of the program was to increase data density through infill and step out drilling within the main area of interest to allow estimation of a predominately measured and indicated resource, from the current inferred resource of 1.5 million tonnes at 1.1% lithium oxide.

The new drill holes across the Block 1-2 and Block 3 areas confirm the predictable lateral continuity of individual sills along up to 1 kilometre of strike.

In addition to previously identified Sills M, N and O, the latest drilling has verified two further lepidolite-bearing pegmatite sills, Sill L above and Sill P below the main mine sill sequence.

These new sills coupled with the step out holes are expected to add substantially to the resource tonnes at Alvarrões.

READ: Lepidico advances process which produces lithium carbonate from non-conventional sources

The mineralised system at Alvarrões remains open to the north, west and at depth.

An updated lithium resource is expected to be estimated in late March 2019.

This new resource estimate will form the basis for a maiden ore reserve estimate scheduled for the June 2019 quarter to support the integrated phase 1 plant feasibility study.

Fri, 08 Mar 2019 17:42:00 +1100
<![CDATA[News - Lepidico advances process which produces lithium carbonate from non-conventional sources ]]> Lepidico Ltd (ASX:LPD) has made significant advances in the development of the L-Max® metallurgical process which produces lithium carbonate from non-conventional sources.

Shares increased 13% to 2.6 cents on news of advances in the work carried out by Lepidico in collaboration with consultants Strategic Metallurgy and Knight Piésold.

Caesium-rich brine produced

Lepidico has concentrated caesium and rubidium into two separate products, including a caesium-rich brine, which has applications in offshore oil and gas drilling.

The brine grading 32% caesium, 8% rubidium and less than 1% potassium has been produced from a lepidolite concentrate generated from the Alvarrões mine in Portugal.

A mixed rubidium-potassium salt was also produced that graded 23% rubidium, 29% potassium and less than 1% caesium, which will be evaluated for its potential industrial application.

Use in oil & gas sector

Oil companies and oil service companies use caesium brine – a high specific gravity, stable fluid at normal operating temperatures.

It increases well productivity, reduces drilling and completion costs, and provides a safe, non-corrosive and environmentally acceptable solution in well development and completion that eliminates the risks involved in handling heavy bromide brines.

Lepidico is pursuing commercial alternatives in relation to a caesium brine by-product sourced from lepidolite.

Further test work is planned with the objective of producing a marketable quality caesium brine, while also refining the associated process circuit.

Amorphous silica generated

Test work has also demonstrated that S-MaxTM generated amorphous silica materially increases the compressive strength of concrete when added as a partial cement replacement.

Tests conducted by Strategic Metallurgy resulted in a significant increase in concrete compressive strength of up to 30% when the L-Max® residue replaced 10% of the Ordinary Portland Cement and after curing for about 20 days.

Feasibility study for phase I plant

Further product development work is planned over the rest of 2018 with the objective of integrating outcomes into the closing stages of the phase I L-Max® Plant feasibility study.

Production of amorphous silica from the planned plant will simplify the process flowsheet versus the pre-feasibility study, which assumed the production of sodium silicate.

The associated operating cost and capital cost savings are expected to be offset by lower

revenue and are planned to be incorporated into the feasibility study.

Market study underway

A market study is underway for the sale of amorphous silica from the plant and the company is pursuing commercial alternatives in this regard.

Trials will also start next month for the use of L-Max® residue as a land reclamation product, following receipt of positive material characterisation tests.

The three-month research collaboration will involve the Department of Earth and Environmental Sciences at the University of Waterloo in Ontario and Knight Piésold Ltd.

Thu, 30 Aug 2018 15:51:00 +1000