KAT Exploration Inc (KATX)

[ShortonCash]

KATX RR a OD rare earth element-niobium deposit?? waiting on news This is geologic confusion, you are both right depending on when the changed the classification... this from 1995

whereas hematite, copper-sulfide minerals, and potassium-rich alteration are more prevalent in

Examples include the giant Olympic Dam uranium-copper-gold-silver-bearing deposit (Australia), the giant Bayan
Obo rare earth element-niobium deposit (China)[

http://pubs.usgs.gov/of/1995/ofr-95-0831/CHAP22.pdf/


SUMMARY OF RELEVANT GEOLOGIC, GEOENVIRONMENTAL, AND GEOPHYSICAL INFORMATION
Deposit geology
These deposits consist of low-titanium iron ore that contains variable amounts of copper, uranium, gold, and rare
earth elements. In the past, these deposits have been separated into two discrete subgroups. Cox (1986a,b), for
instance, refers to the subgroup consisting primarily of iron oxide minerals with minor apatite as volcanic-hosted
magnetite depotheir shallower part

sits (Model 25i), whereas the subgroup that contains significant amounts of copper-sulfide minerals
and uranium are termed Olympic Dam-type deposits (Model 29b). [color=red]However,

Hitzman and others (1992) have shown
that both subgroups share common genetic traits and can be merged as a distinct deposit type

[/color]; the geoenvironmental
model presented here pertains to the merged deposit type.
Specific characteristics of this deposit type vary among deposits, but all deposits are characterized by magnetite and (or) hematite concentrations with distinctly low titanium contents (generally <2 weight percent TiO2); in addition, most contain some copper sulfide minerals. Most deposits display evidence, including fluid-inclusions, replacement textures, coherently zoned alteration patterns, and alteration-associated veins, of a hydrothermal origin. However, the genesis of some deposits is ambiguous, and a variety of alternative origins, including magmatic emplacement involving immiscible iron-rich melts, syngenetic exhalations, and metamorphic dehydration, have been proposed.
The deposits range from conformable to crosscutting and may be found as parts of ore systems that extend more than 3 to 5 km in the vertical dimension. Data show that deeper parts of some of these ore deposits formedfrom hot (400 to >600° C), magmatic ( 18O ~+8‰) fluids; at more shallow levels, these deposits formed from cooler (200-400°C), mixed magmatic-meteoritic fluids ( 18O~ +1‰) (Gow and others, 1994). Magnetite deposition and sodium-rich alteration zones predominate in the deeper (hotter) parts of these systems,[color=red] s[whereas hematite, copper-sulfide minerals, and potassium-rich alteration are more prevalent in their shallower part/color] (fig. 1). Deposits are in rocks of widely variable ages, but are most abundant in Proterozoic (1.8-1.1 Ga) rocks.
Examples
Examples include the giant Olympic Dam uranium-copper-gold-silver-bearing deposit (Australia), the giant Bayan
Obo rare earth element-niobium deposit (China)