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Additional Information

Market:	ASX
Sector:	General Mining
EPIC:	DTM
Latest Price:	0.13 (13.04% )
52-week High:	0.17
52-week Low:	0.05
Market Cap:	18.21M

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Dart Mining Full Dart Mining profile here

Dart Mining’s (ASX: DTM) principal project is Unicorn – a molybdenum-copper-silver porphyry deposit with strong geological similarities to the Henderson molybdenum mine in Colorado, USA. The company also has two gold projects including Mountain View and Fairley’s disseminated gold prospect.

The Gilmore suture - a proven host of substantial porphyry mines including North Parkes, Cadia and Ridgeway in NSW and the Benambra VMS deposit in Victoria - crosses into Dart Mining’s 2500 square kilometres of tenements.

Dart Mining intersects visible molybdenite at Morgan molybdenum prospect

Tuesday, March 02, 2010

Diamond drilling is continuing at Dart Mining NL’s (ASX: DTM) Morgan molybdenum prospect in NE Victoria.

Visible molybdenite was intersected within altered Porphyry in drill hole DMMDD002.

Chief executive officer, John Quayle said today the drill hole geology and alteration of DMMDD002 is similar to the world’s largest molybdenum orebodies - and indicates proximity to a buried intrusion within the target zone.

Hole DMMDD001 was completed on 14 Jan 2010 at 529.8 metres after it had deviated significantly to the southwest and hence moved away from the interpreted porphyry target. Based on the presence of notable silver zones and style of alteration in the core, the hole is interpreted to have intersected an outer alteration shell of the interpreted porphyry.

The second hole, DMMDD002 is currently at approximately 400 metres and drilling ahead. Alteration intensity and sulphide mineralisation has systematically increased down hole. The pattern of alteration indicates higher temperatures of alteration fluids and suggests proximity to an adjacent mineralised intrusion.

Fine molybdenite has been logged within quartz veining and within rounded vein quartz breccia fragments below 340m. Fragments of chalcedonic layered silica alteration are present within blocky breccia zones and represent silica flooding alteration from deeper levels. Fluorite alteration is also noted below 370m with massive sulphide bandsbecoming common.

Drilling of the Morgan prospect is being assisted by a grant from the Victorian Government Rediscover Victoria Drilling Programme.

Dart reports that the second diamond drill hole at the companies Morgan Porphyry Prospect (currently at approximately 400m down hole depth of a planned 650 – 700m) has intersected what is interpreted to be molybdenite mineralisation hosted by altered Porphyry. It is not yet known how this porphyry and other altered porphyry dykes relate to the interpreted concealed porphyry target but does indicate that molybdenite mineralisation has occurred within at least one phase of the porphyry system.

Molybdenite has been logged over significant intervals associated with steep silica – sericite alteration veins within sediments from 72 – 90m and also within quartz stockwork and alteration veins cutting porphyry dykes between 96 – 100m and 134 – 144m.

The concealed porphyry target zone is interpreted to occur below 400 - 450m down hole with drill hole logging indicating a strong pyritic zone (or shell) has been intersected below 200m.

This shell may surround the concealed body with a marked increase in massive sulphide lodes occurring below 340m downhole.

The dominance of chlorite and sericite alteration in the upper parts of the hole transition into silica - sericite and adularia with depth and indicate higher temperatures of alteration fluids.

Molybdenum mineralisation in the world’s largest primary deposits is often associated with these areas of elevated heat and fluid flow adjacent to and within the upper portions of porphyry systems.

The drill hole is expected to enter the target zone in the next 10 days and proceed through to a depth of some 700m.

The alterations style and changes with depth combined with the silver intersection (4m @ 35.8 g/t Ag, including 2m @ 50.1 g/t Ag) within a zone of significant silver and bismuth (6m @ 2276 ppm Bi) mineralisation is consistent with the alteration observed in the current hole DMMDD002. Hole DMMDD001 is interpreted to have intersected the outer alteration shell and was terminated at 529.8m depth.

Shares of Dart Mining last traded at 9 cents.

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