The Howell Zone, 1500 metres northeast of the Breccia Zone, is defined by highly anomalous copper-gold soil and rock geochemistry, outcrops of mineralized breccia and monzonite
intrusive rock, and a strong magnetic high anomaly - no drilling has been done on the Howell Zone.
Company geologists believe this block acted as a significant fluid trap in the contact zone with the quartz monzonite
to the north-east.
The rock compounds of the area include: granite, granodiorite, monzonite
and diorite with identified granular, porphyritic and granophyric texture in microscopic thin section.
Mineralisation began at the surface in GHD005 but exited the hole at ~100m, and entered through highly veined and strongly potassically and propylitically altered monzonite
to the ESE of the pipe edge.
The Charlo plutonic suite is a group of small plutons and dykes, located west of the Dickie Brook and Landry Brook plutons and consists mainly of diabase, quartz monzonite
to monzogranite, rhyolite porphyry, and dacite porphyry.
The known mineralization is associated with quartz monzonite
intrusions, which typically show a magnetic low response from hydrothermal destruction of magnetite.
intrusives such as quartz monzonite
("PPQM"), rhyodacite ("PPRD"), quartz
Small and isolated intrusions of diorite, gabbro, gabbronorite, ultramafic rocks, monzonite
, syenite and anorthosite constitute about 2% of the area.
on a Saturday I find myself standing in a parking lot in Southern California's Joshua Tree National Park, which is famous for the quartz monzonite
rock that draws climbers from all over the world.
About nine miles from the junction is Cimarron Canyon State Park, where you can stand at the base of a palisades sill - a spectacularly sheer monzonite
Japan bans as environmentally dangerous the import and processing of monzonite
, the raw material for yttrium.
The copper-gold mineralization of the Chuchi deposit is centred on a cluster of plagioclase porphyry monzonite
stocks, dykes and sills.