To: Richard Mazzarella who wrote (19528 ) 7/22/1999 4:24:00 PM From: Chuca Marsh Respond to of 20681
With ASE oversight you may be dead wrong. ( In a P % D that is) IMHO. Anything now realesed by my ASE listed TYPE of companies have to follow guidelines. Thus, if and when, I hope that there can be news, there will NEWS! All flys must smell, that is why they rub a dub. It ain't a bath in FL. LOL. Chucka- NO WAT WILL A CLASSIC P & D be allowed by ANY ASE oversighted company! If there is such a word< OVERSOUGHT - that is in Naxos' case and if my old knowledge of ASE involvement still holds true, which I am certain it does. > P.S.- All the naxos guys, ever done comparison and contrasting on other ASE golds and metals companies NEWS RELEASES, ever notice that Scanning Electron Microscopes are now being mentioned in recent PRs from my favorite Birch Mountain to Marrum resources to EM soon at New Blue? Think on that( befor thou 90 days are up or whatever). P.P.S. ****************************** BELOW two URLs************************ Notice how these rocks LOOK like it/they COULD of come out of Alberta claim of BIRCH MOUNTAIN and the PGM -Prairie Gold Model:freeyellow.com freeyellow.com >BMD <<<<birchmountain.com >>>> >Birch Mountain DOLOMITE and LIMESTONES in a diagram a must study- must see! >http://www.birchmountain.com/Home/What_is_PrairieG/model/model.html <<<< MMU:ASEMessage 10576653 Message 10576653 mmu.simplenet.com >>>> \TEXT BOOK: PMG interest of mine... Sedimentology Process and product - M. R. Leeder ISBN 0-04-551053-9 First ed 1982 : PUB : Allen & Unwin, London and Boston and Sydney: ...Indicating that sea water is supersaturated with respect to DOLOMITE and therefore dolomite should be precipitating widely ( Hsu 1966), Furthur, Hsu shows that dolomite is more stable than either calcite or argonite in sea water by considering the following reaction: Ca2+ Plus CaMg ( C) 3)2 = <> Mg2+ PLUS 2CaCO3 ...///... ONE=Ca2+ PLUS one CO2/3 - calcite . In sea-water is the CRUX of what has been called the DOLOMITE PROBLEM ...////....Sponantaneously toward equilibrium, i.e. carbonate Sediments SHOULD be DOLOMITED by contact...with Ordinary SEA WATER.///..//.... reverse reaction The Nevada Rocks are from the Complex Nevada mountains that I call the HEADWATERS of Johnson and Franklin Lakes Region( Old Glasial basin seas of salts from Melting Glaciers of Bob Barefoot The Great Basin Gold Discovery- Theory< see Recent Maxam Gold Thread Posts in 90 day search>), my Model and Theory only, JMHO: Chucka ( To Naxos Guys and Gals ) d -and theoretical e crux of what has tr the most up-to~8O). The inability of dolomite TO PRECIPATE FROM SEA WATER MUSR BE THE CAUSE OF SOME CRYSTALLATION DIFFICULTY ie a kinetic factor. In the case of DOLOMITE this is thought to arise from THE EXTREME REGULARITY of the CRYSTAL Laittice (Fig. 29.13). ions, CO~ ions, !a2~ and Mg2 ions = 1.08 A; Mg ( sacn is bad ..partial on the rest) SEE graft on attachment : Mg calcite in bicarj Mg3~.- (hI layer-byition from the same ~~c'C(~f ~ ~ ~- ~ _ OL ~uired for the face-by-face growth 29.13b). These are thought to include slow growtn duo dilute ionic solutions (see below). Attempts to precipitate dolomites under laboratory conditions at Earth surface temperatures lead to the formation of magnesian calcites which lack the ordering of the true dolomite lattice. Under certain conditions, however, a metastable form of dolomite may be produced by primary precipitation or by the alteration of preexisting aragonite or calcite. The protodolomites thus formed are best defined formally as metastable single-phase rhombohedral carbonates which deviate from the composition of the dolomite that is stable in a given environment, or are imperfectly ordered or both. but which possess a high degree of cation order as witnessed by the unambiguous presence of order reflections in Xray diffraction patterns' (Gaines 1977). Protodolomite appears as a precu~sor to dolomite in replacement reactions. Protodolomites are in effect calcian dolomites with an excess of Ca2 in their lattices (Ca~.~5 Mg5~55 (C03)2. High temperatures (~200OC) are needed to precipitate pure dolomite in the laboratory. Having discussed the various chemical difficulties involved in direct dolomite precipitation horn sea water. let us turn to discuss the three major secondary dolomitisation mechanisms which have been proposed in recent years. These are conveniently referred to as the evaporite brine-residue model. the fresh phreatic/marine groundwater mixing model. and the formation water model. The evaporite brine-residue model is based upon the observed chemical and mineralogical changes taking place just under the surface of the broad supratidal plains around the Arabian Gulf known as sabkhas (see also Chs 23 & 30). Very widespread dolomitisation has taken place in these sediments. involving the replacement of aragonitic sediment by a very fine-grained protodolomite mudrock (Illing ef ol. 1965. Kinsman 1966). Analysis of the pore waters (Fig. 29.14) at various points over the surface of the sabkha (from the lagoon inland) reveals systematic chemical changes indicative of large-scale removal of Ca2 and SO42~ ions as gypsum. followed by massive dolomitisation of aragonitic sediment grains of the former lagoon sediments. The gypsum is precipitated as nodules within the dolomitised carbonates (Ch. 30). The chemical changes resulting in dolomitisation are caused by progressive concentration of sea water bv e\aporation (6'~O ~3 to 7) from pores at the sabkha surface (Kinsman 1966). Pore-water replenishment x