Remember that in the last news release, one of the drill holes ended in a lengthy section of Garrbo. I was curious of what, if any implictions that might have and found the following definition to be of interest:

GABBRO

Gabbro is a medium or coarse-grained rock that consists primarily of plagioclase feldspar and pyroxene. Essentially, gabbro is the intrusive (plutonic) equivalent of basalt, but whereas basalt is often remarkably homogeneous in mineralogy and composition, gabbros are exceedingly variable. Gabbros are found widely on the Earth and on the Moon as well. Gabbros are sometimes quarried for dimension stone (the black granite of commerce), and the San Marcos Gabbro of southern California is used for gauge blocks, but the true economic value of gabbro is minor. Far more important are the nickel, chromium, and platinum that occur almost exclusively in association with gabbroic or related ultramafic rocks. Primary magnetite (iron) and ilmenite (titanium) mineralizations are often intimately associated with gabbroic complexes.

Banded, or layered, gabbroic complexes in which monomineral or bimineral varieties are well developed have been described from Montana, the Bushveld in South Africa, and the island of Skye. There are also gabbro complexes that are inhomogeneous and not regularly layered, as the large, basinlike intrusion at Sudbury, Ontario, and some of the larger diabase sills (tabular intrusions), as the Palisades, New Jersey; and many of the Karoo diabases (fine-grained gabbro) in South Africa. A lopolith at Duluth, Minn., is a notable exception to the rather arbitrary division between layered and unlayered gabbro complexes. The lower part of this mass has the average composition of an olivine gabbro but is strongly banded. The upper portion is a comparatively homogeneous feldspathic gabbro, not sharply banded.

Although gabbro forms in diverse tectonic settings, much is thought to form at divergent plate margins. Here, the gabbro is a product of mantle-derived partial melts of peridotite. These partial melts rise bouyantly in the oceanic crust and solidify. The upper portion of the magma chamber crystallizes as the fine-grained, ubiquitous, pillow lavas characteristic of the ocean floor, while the middle and lower portions of the system soldify as diabasic dikes and cumulus textured gabbro.

From last news release on spq jv: Hole FW-08-07, located 100 meters grid east of FW-08-05, was drilled at an inclination of -50, with an azimuth of 150 degrees. This hole was drilled to a final depth of 405.7 meters. Hole 7 encountered peridotite right away at 10 meter core length and the hole remained in peridotite until 194.7m. Chromitite layering started in a Pyroxenite, followed by short chromitite layers between 194.7 to 195 meters, and between 197.8 to 205.5 meters, followed by a thick bed of chromitite between 209.8 to 223.3 meters. This hole continued in pyroxenite until 300 meters where the hole entered gabbro and remained in this rock unit until 405.7 meters.