Replies to post #125571 on KAT Exploration Inc (KATX)

[Jackroch]

http://www.bloomberg.com/news/2011-01-14/toyota-readying-electric-motors-that-don-t-use-rare-earths.html

An interesting line in the article:

"Toyota confirmed last year it has a task force to find rare-earth supplies outside China."

[ShortonCash]

Not a geo but this seems to leave everthing in play

The physical, mineralogical and geological properties of IOCG deposits are summarized below to provide insights on what may or may not be detectable by conventional or emergent field, geophysical, geochemical or remote sensing mapping techniques

http://gsc.nrcan.gc.ca/mindep/synth_dep/iocg/index_e.php


The ore mineral phases vary considerably among the deposits (Ray and Lefebure, 2000). The principal ones are hematite (specularite, botryoidal hematite and martite), low-Ti magnetite, bornite, chalcopyrite, chalcocite and pyrite. Subordinate ones include Ag-, Cu-, Ni-, Co-, U-arsenides, autunite, bastnaesite, bismuthinite, brannerite, britholite, carrolite, cobaltite, coffinite, covellite, digenite, florencite, loellingite, malachite, molybdenite, monazite, pitchblende, pyrrhotite, sulphosalts, uraninite, xenotime, native bismuth, copper, silver and gold, Ag-, Bi-, Co-telluride, and vermiculite. Gangue mineralogy consists principally of albite, K-feldspar, sericite, carbonate, chlorite, quartz (crypto-cristalline in some cases), amphibole, pyroxene, biotite and apatite (F- or REE-rich) with accessory allanite, barite, epidote, fayallite, fluorite, ilvaite, garnet, monazite, perovskite, phlogopite, rutile, scapolite, titanite, and tourmaline. The amphibole includes Fe-, Cl-, Na- or Al-rich hornblende (edenite), actinolite, grunerite, hastingsite, and tschermakitic or alkali amphibole. Carbonates include calcite, ankerite, siderite and dolomite. Late-stage veins contain fluorite, barite, siderite, hematite and sulphides

These minerals (listed in Table 3), notably the light REE-, Bi-, Co- and U- bearing minerals and rutile have distinctive chemical fingerprints and their mineral chemistry is used as process-forming and source-rock tracers

The presence of intermediate rocks such as diorite and granodiorite as well as mafic rocks are becoming more and more critical in the evaluation of prospective districts based on unveiled magmatic associations,

In the Appalachian orogen, the other extensively explored areas for IOCG deposits are: the Avalon zone (Cross Hill and Net Point prospects; Newfoundland; GSNL National Mineral Inventory Number, 001M/10/Cu 005 and 001M/12/Cu 006 in Geological Survey of Newfoundland and Labrador, 2003),

The span of deposit types associated with iron oxide settings has led Porter (2002b) to advocate that "iron-oxide rich 'oxide mineralizing systems' may represent the converse of the iron-rich reduced systems on which attention has been focussed for so long". This author also points out that if public geosciences and industry grass roots exploration "were to concentrate on the 'oxide alteration/mineralizing systems', other large, as yet unrecognized, ore deposits of different commodities and ore classes may be recognized, or existing deposits may be 're-classified' and better appreciated

The search for iron oxide Cu-Au-Ag-U-P-REE-Bi-Co (IOCG) deposits requires that public geosciences adapt their current expertise and survey tools to granitic and gneissic frontier terranes while integrating basin analysis and mineral deposit studies as diverse as volcanic-hosted massive sulphides, uranium and SEDEX deposits. Transient processes seem to play a major role in the formation of IOCG deposits (e.g. the importance of magmatic-hydrothermal fluids, mixing of downward and upward migrating fluids in active fault zones, etc) and this is in itself a major challenge. The realm of parameters that need to be taken into account challenges current expertise and exploration techniques. The search for IOCG deposits needs to significantly evolve to meet the challenge posed by remote and complex Canadian geological and geographic terrains

[ShortonCash]

The Core was barren at Olympic Dam good reading not to long not to complex
The OLYMPIC DAM Cu-U-Au-Ag-REE deposit, Australia 9 http://www.geo.tu-freiberg.de/oberseminar/os07_08/Thomas%20Hahn.pdf

I have read all of the post since the Christmas gift posting and wonder how many posters know anything about what Olympic Dam results were suppose to look like.... The core is suppose to be barren..... the REE are suppose to spread out on the top. From what I have read a gift was given and few brother to check the language it was give in .....IMO. There is a reason the added more claim...... the field is HUGE. IMO


OD "Ore zones and mineralization patterns
Although the ore zones account for only a small part of the whole volume of the
breccia complex Cu, U, Ag and Au minerals are widespread within the deposit
(Fig.5.). There are background levels of around 0.5 wt. % copper, 0.2 kg/t uranium
oxide, 1 g/t silver and 0.5 g/t gold. The highest grade of copper and uranium mineralization
is associated with more hematite altered rocks even though the hematitequartz
core is barren of copper and uranium minerals"


http://www.minerals.net/mineral/sulfides/chalcopy/chalcopy.htm

Chalcopyrite is the chief ore of copper.
"Peacock Ore" which is sold to many amateur mineral collectors and thought to be Bornite usually is Chalcopyrite that is treated with acid to produce a greater tarnish.

http://ih.advfn.com/p.php?pid=nmona&cb=1267833742&article=40509419&symbol=NO%5EKATX

RR The host rocks for most of the mineral occurrences and the unit overlying the most intense portion of the magnetic anomaly is a brecciated, hematitic felsic volcanic rock, locally with veins of purple fluorite and disseminated pyrite

RR Hole RR10-01, approximately 500 meters south of RR10-02, was drilled to a depth of 719.3 meters to test a coincident gravity and magnetics anomaly. The hole intersected mafic volcanic rocks, conglomerates and mafic intrusive rocks that contain indications of sub-economic copper mineralization throughout most of the drill hole (including native copper and chalcopyrite). The conglomerate unit is also strongly hematite altered[/color], which could explain the gravity anomaly. The upper part of the magnetics geophysical anomaly is coincident with a thick magnetic mafic dyke


OD where a long and repeated process of brecciation and magnetite-
hematite alteration took place. Hence the deposit is located within a huge complex
of irregularly shaped and variably mineralised breccia bodies which is knownas the Olympic Dam Breccia Complex
http://www.geo.tu-freiberg.de/oberseminar/os07_08/Thomas%20Hahn.pdf

OD Furthermore a variable REE mineralization of mostly cerium and lanthanum is disseminated across the deposit.

OD Contrary to this Johnson & McCulloch (1995) proposed a fluid influenced by mafic to ultramafic, mantle derived magma. However, it is relatively ensured that
the ore mineralization was connected with this late hematite alteration

Veins, veinlets and vein fragments are very common within the breccia complex.
They are mono- or polymineralic and consist of mineral assemblages which also
dominate the alteration and mineralization associations of the breccias. Those are
sericite, barite, siderite, chlorite, fluorite, sulfides, quartz or pitchblende. A
second, late stage array of veins contains a laminated barite-siderite-flouritesulfide
mineralization and extends into the sedimentary cover.
The ODBC was also intruded by several ultramafic, mafic and felsic dykes with
irregular wispy or tentacular shapes (Reynolds, 2000). At the top of the deposit
they are less than 1 meter thick but thicker and more abundant at the depth

OD Economic ore minerals
Principal copper-bearing minerals are chalcopyrite, bornite and chalcocite, which
precipitated co-genetically. There also is a small amount of native copper and other
copper-bearing minerals

OD Over and above that, the importance of the Olympic Dam deposit with regard to of deposit. Furthermore, it describes a genetic model which can be applied for many deposits all over the world.