Gemfields Uncovers 40.23-Ct Ruby at Mozambique Mine (IDEX Online)

(IDEX Online) – Gemstone miner Gemfields has discovered a 40.23-carat ruby Mozambique that the firm says it believes to be one of the most important rubies unearthed in recent times.  

“The gemstone will set a new benchmark for the quality of African rubies and endorses the Montepuez deposit in Mozambique as the world’s most significant deposit presently in development,” the company said in a statement. “At 340 square kilometers, Montepuez is the largest ruby mining concession in private hands in the world today, and has already proven to be one of the most productive of all ruby mining concessions.”

Gemfields CEO Ian Harebottle said the ruby is “possibly one of the finest rubies to have been discovered in recent generations”. Gemfields own 75% of Montepuez, with local partner, Mwiriti, owning the remainder.

Full report @ IDEX Online

(November 25, ’14, 9:26 Albert Robinson)

Diamante Minerals and Mineracao Batovi Form $12-Million Joint Venture 

SOURCE: Diamante Minerals

November 24, 2014 18:41 ET

Exploration to Commence on Batovi Diamond Project With Leading Geologist Charles Fipke

NEW YORK, NY–(Marketwired – Nov 24, 2014) – Diamante Minerals, Inc. (OTCBB: DIMN), a natural resources company focused on the diamond sector, today announced that it has executed an agreement to form a joint venture valued at approximately $12 million with mining and exploration company Mineracao Batovi Ltda.

The joint venture agreement contemplates the establishment of a new corporation to develop, finance and operate a diamond exploration project located to the north of Paranatinga in Mato Grosso, Brazil. As part of the agreement, the newly formed joint venture will receive approximately $1,000,000 in cash from Diamante, as well as mineral claims from Mineracao. Diamante will receive 20% of the new Brazilian corporation. Diamante is also responsible for the next $2,000,000 of expenses of the joint venture corporation. If Diamante incurs these exploration expenses prior to November 20, 2017, Diamante will be entitled to a 49% interest in the joint venture.

“Diamante’s joint venture with Mineracao fast tracks the discovery of a potentially significant economic resource in a region that has demonstrated high prospectivity for diamonds,” said Chad Ulansky, chief executive officer of Diamante Minerals. “We are excited to partner with a company that is led by legendary geologist Chuck Fipke and begin the first modern exploration of this highly compelling region.”

Charles “Chuck” Fipke is a founder of Canada’s first diamond mine, Ekati. Between 1998 and 2011, the mine had produced 50 million carats, according to Mining Global. An affiliate of Fipke will be issued shares holding a 5 percent ownership stake in Diamante as a result of the joint venture agreement.

“Exploring the Rio Batovi basin has been of great interest to me for many years, and now we have the right partner to accelerate the process of finding diamond-bearing kimberlites,” said Fipke, who is a majority owner of Mineracao. “I am confident that we will make excellent progress during the next several months, as we launch an airborne survey of the claims area.”

The area of the claims for the project is 109,687.6 hectares or 271,044 acres.

Forward-Looking Statements
This release and the materials referred to herein contain forward-looking statements within the meaning of Section 27A of the Securities Act of 1933, as amended and Section 21E of the Securities Exchange Act of 1934, as amended. All forward-looking statements are inherently uncertain as they are based on current expectations and assumptions concerning future events or future performance of DIMN. Readers are cautioned not to place undue reliance on these forward-looking statements, which are only predictions and speak only as of the date hereof. In evaluating such statements, prospective investors should review carefully various risks and uncertainties inherent herein and in publically available information on DIMN. These risks and uncertainties could cause actual results to differ materially from those indicated in the forward-looking statements.

About Diamante Minerals
Diamante Minerals is a mining and exploration company focused on developing the Batovi Diamond Project, located to the north of Paranatinga in Mato Grosso, Brazil. Formerly known as Oconn Industries Corp., the company’s name was changed to Diamante Minerals, Inc. in April 2014.


  • For more information, contact:
    Evan Pondel
    PondelWilkinson Inc.
    Email Contact

Penedono gold prospect – old Roman works, current prospect

Penedono gold(-bearing granite-hosted quartz veins) prospect: the place, the history and the deposit


Current day geologists walking the steps of Roman forefathers - vein worked in Roman times

Current day geologists walking the steps of Roman forefathers – vein worked in Roman times

Penedono (Viseu district, northern Portugal) is home to a gold(-bearing granite-hosted quartz veins) prospect, currently being explored and evaluated by the Penedono consortium (Canadian Colt Resources and Brazilian Contécnica) –ónio.

The Santo António Experimental Mining Licence (EML) in North-Eastern Portugal covers a total area of 35.34 km2. This concession was granted to a joint venture between Colt and Brazilian company, Contecnica, in which the latter will be the operator (Press Release: September 4, 2012). The granting of this concession follows on the exploration project undertaken by Colt in the Penedono concession between 2007 and 2012. 

The area is mostly underlain by multi-phase granitic intrusions of the Variscan tectonic cycle (Upper Paleozoic), which host a number of known gold deposits of the “Reduced Intrusion Related” type. These can consist of either individual veins such as at Sendim; clusters of quartz veins such as at Santo António (13 veins), Ferronha and Dacotim (3 main veins each); or sheeted vein systems with or without associated greisen envelopes, such as respectively at Turgueira and Marofa. Some tungsten mineral (wolframite) can also be present in these mineralized structures (e.g. Santo António, Turgueira) which can perhaps originate by-product tungsten production.

Mining activity in the area dates back to Roman times, when gold was produced from Santo António, Ferronha and Dacotim. Small scale artisanal tungsten (wolframite) mining took place in the area during the 1940’s and 1950’s. Gold mining attempts were also undertaken in the mid 20th Century from Ferronha, Dacotim and particularly Santo António. The latter was exploited by the Companhia das Minas de Ouro de Penedono in the 1950’s, having produced a total of around 11,000 ounces of gold from a total of 105,000 tons of ore (ROM) extracted from underground mining along veins # 2 and 3, and to a minor extent veins # 7 and 13. 

The 1950’s Santo António mining plant never achieved an acceptable level of gold recovery and as a result the ca. 100,000 mof tailings material still existing at the Santo António mine are believed to host gold that may be recoverable using more modern methods. 

During the experimental mining period the Joint Venture’s activity will focus on: trial open pit mining at Turgueira; recovery of gold from the Santo António tailings; excavation of a new adit to access and de-water the Santo António underground workings and recover for pilot metallurgical testwork blasted ore left in the old galleries; and continuing evaluation drilling of the vein deposits.

Mineral deposits of Portugal

Mineral Resources of Portugal

Portugal has been a mining country for more than 2.000 years. Mines and deposits worked in Roman times (e.g. Aljustrel in the Iberian Pyrite Belt, Penedono in the north) are still being exploited, explored or being considered for exploitation. Yet, despite its long mining tradition, Portugal has a good potential for new deposits – Neves Corvo mine massive VMS Cu – Zn, Sn deposits discovered in 1977, Tabuaço skarn-type W (scheelite) deposit discovered recently and now being evaluated by Colt Resources – currently as an Experimental Mining Licence (EML).

The Portuguese Government published a summary report (by Luís Martins) on the country’s mineral potential. To obtain it, just click here.


Fui convidado para apresentar um tema (obrigado à Comissão Organizadora pelo convite). Sugeri (e foi aceite):

Minerais de conflito (diamantes e 3TG), Processo de Kimberley e Frank Dodd
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