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<title>UTas ePrints - Linking mineral and fluid inclusion paragenetic studies: The Batman deposit, Mt. Todd (Yimuyn Manjerr)goldfield, Australia</title>
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<meta content="Hein, K.A.A." name="eprints.creators_name" />
<meta content="Zaw, K." name="eprints.creators_name" />
<meta content="Mernagh, T.P." name="eprints.creators_name" />
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<meta content="Linking mineral and fluid inclusion paragenetic studies:
The Batman deposit, Mt. Todd (Yimuyn Manjerr)goldfield, Australia" name="eprints.title" />
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<meta content="The quartz-sulphide vein system of the Batman deposit at the Mt. Todd Mine, Australia, formed during east-west extension of a north-northeasterly trending structure system, early in D2 during retrograde contact metamorphism associated with cooling of the Tennysons leucogranite. Four distinct fluid inclusion types have been identified in gold-bearing quartz-sulphide veins of the deposit: (Type I) low to moderate salinity aqueous primary inclusions (1 to 20 wt.% NaCl equivalent) with small amounts of CO2; (Type II) high salinity Na-Ca-Cl aqueous secondary inclusions (35 to 50 wt.% total NaCl-CaCl2), containing halite, carbonate and trona daughter minerals, and minor CO2-CH4 vapour; (Type III) liquid and vapour secondary fluid inclusions (28
to 34 or 17 to 18 wt.% NaCl equivalent) with CH4 vapour and discrete gold and bismuth grains and associated growth zones; (Type IV) vapour-rich CO2F(CH4) secondary inclusions with minor NaCl liquid (N 20 wt.% NaCl equivalent). A consistency in bulk fluid composition suggests a common parent fluid and a common parent source for the fluid inclusions.
Previous paragenetic and textural studies have established a sequence in sulphide and silicate precipitation. The mineral paragenesis has been linked to the trapping chronology of Types I-IV fluid inclusions in order to constrain the fluid conditions during (micro)-tectonism and the mineralising process. The link is possible because two mineral phases exhibit a temporal genetic relationship with the formation of fluid inclusions: (1) Growth zones in simple open space quartz fill contain tourmaline
crystals in intimate association with Type I liquid-vapour fluid inclusions; (2) Gold is intimately associated with bismuth in Type III vapour-liquid fluid inclusions, either as discrete inclusions within the trails, or wetting the inclusions. The progressive change in the composition of Types I-IV is consistent with the evolution of a retrograde contact metamorphic fluid in wall rock lithologies." name="eprints.abstract" />
<meta content="2006" name="eprints.date" />
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<meta content="Ore Geology Reviews" name="eprints.publication" />
<meta content="28" name="eprints.volume" />
<meta content="180-200" name="eprints.pagerange" />
<meta content="10.1016/j.oregeorev.2005.05.001" name="eprints.id_number" />
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<meta content="The quartz-sulphide vein system of the Batman deposit at the Mt. Todd Mine, Australia, formed during east-west extension of a north-northeasterly trending structure system, early in D2 during retrograde contact metamorphism associated with cooling of the Tennysons leucogranite. Four distinct fluid inclusion types have been identified in gold-bearing quartz-sulphide veins of the deposit: (Type I) low to moderate salinity aqueous primary inclusions (1 to 20 wt.% NaCl equivalent) with small amounts of CO2; (Type II) high salinity Na-Ca-Cl aqueous secondary inclusions (35 to 50 wt.% total NaCl-CaCl2), containing halite, carbonate and trona daughter minerals, and minor CO2-CH4 vapour; (Type III) liquid and vapour secondary fluid inclusions (28
to 34 or 17 to 18 wt.% NaCl equivalent) with CH4 vapour and discrete gold and bismuth grains and associated growth zones; (Type IV) vapour-rich CO2F(CH4) secondary inclusions with minor NaCl liquid (N 20 wt.% NaCl equivalent). A consistency in bulk fluid composition suggests a common parent fluid and a common parent source for the fluid inclusions.
Previous paragenetic and textural studies have established a sequence in sulphide and silicate precipitation. The mineral paragenesis has been linked to the trapping chronology of Types I-IV fluid inclusions in order to constrain the fluid conditions during (micro)-tectonism and the mineralising process. The link is possible because two mineral phases exhibit a temporal genetic relationship with the formation of fluid inclusions: (1) Growth zones in simple open space quartz fill contain tourmaline
crystals in intimate association with Type I liquid-vapour fluid inclusions; (2) Gold is intimately associated with bismuth in Type III vapour-liquid fluid inclusions, either as discrete inclusions within the trails, or wetting the inclusions. The progressive change in the composition of Types I-IV is consistent with the evolution of a retrograde contact metamorphic fluid in wall rock lithologies." name="DC.description" />
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<h1 class="ep_tm_pagetitle">Linking mineral and fluid inclusion paragenetic studies: The Batman deposit, Mt. Todd (Yimuyn Manjerr)goldfield, Australia</h1>
<p style="margin-bottom: 1em" class="not_ep_block"><span class="person_name">Hein, K.A.A.</span> and <span class="person_name">Zaw, K.</span> and <span class="person_name">Mernagh, T.P.</span> (2006) <xhtml:em>Linking mineral and fluid inclusion paragenetic studies: The Batman deposit, Mt. Todd (Yimuyn Manjerr)goldfield, Australia.</xhtml:em> Ore Geology Reviews, 28 . pp. 180-200.</p><p style="margin-bottom: 1em" class="not_ep_block"></p><table style="margin-bottom: 1em" class="not_ep_block"><tr><td valign="top" style="text-align:center"><a href="http://eprints.utas.edu.au/1309/1/Hein%2C_Zaw_et_al_2006.pdf"><img alt="[img]" src="http://eprints.utas.edu.au/style/images/fileicons/application_pdf.png" border="0" class="ep_doc_icon" /></a></td><td valign="top"><a href="http://eprints.utas.edu.au/1309/1/Hein%2C_Zaw_et_al_2006.pdf"><span class="ep_document_citation">PDF</span></a> - Full text restricted - Requires a PDF viewer<br />498Kb</td><td><form method="get" accept-charset="utf-8" action="http://eprints.utas.edu.au/cgi/request_doc"><input value="1703" name="docid" accept-charset="utf-8" type="hidden" /><div class=""><input value="Request a copy" name="_action_null" class="ep_form_action_button" onclick="return EPJS_button_pushed( '_action_null' )" type="submit" /> </div></form></td></tr></table><p style="margin-bottom: 1em" class="not_ep_block">Official URL: <a href="http://dx.doi.org/10.1016/j.oregeorev.2005.05.001">http://dx.doi.org/10.1016/j.oregeorev.2005.05.001</a></p><div class="not_ep_block"><h2>Abstract</h2><p style="padding-bottom: 16px; text-align: left; margin: 1em auto 0em auto">The quartz-sulphide vein system of the Batman deposit at the Mt. Todd Mine, Australia, formed during east-west extension of a north-northeasterly trending structure system, early in D2 during retrograde contact metamorphism associated with cooling of the Tennysons leucogranite. Four distinct fluid inclusion types have been identified in gold-bearing quartz-sulphide veins of the deposit: (Type I) low to moderate salinity aqueous primary inclusions (1 to 20 wt.% NaCl equivalent) with small amounts of CO2; (Type II) high salinity Na-Ca-Cl aqueous secondary inclusions (35 to 50 wt.% total NaCl-CaCl2), containing halite, carbonate and trona daughter minerals, and minor CO2-CH4 vapour; (Type III) liquid and vapour secondary fluid inclusions (28
to 34 or 17 to 18 wt.% NaCl equivalent) with CH4 vapour and discrete gold and bismuth grains and associated growth zones; (Type IV) vapour-rich CO2F(CH4) secondary inclusions with minor NaCl liquid (N 20 wt.% NaCl equivalent). A consistency in bulk fluid composition suggests a common parent fluid and a common parent source for the fluid inclusions.
Previous paragenetic and textural studies have established a sequence in sulphide and silicate precipitation. The mineral paragenesis has been linked to the trapping chronology of Types I-IV fluid inclusions in order to constrain the fluid conditions during (micro)-tectonism and the mineralising process. The link is possible because two mineral phases exhibit a temporal genetic relationship with the formation of fluid inclusions: (1) Growth zones in simple open space quartz fill contain tourmaline
crystals in intimate association with Type I liquid-vapour fluid inclusions; (2) Gold is intimately associated with bismuth in Type III vapour-liquid fluid inclusions, either as discrete inclusions within the trails, or wetting the inclusions. The progressive change in the composition of Types I-IV is consistent with the evolution of a retrograde contact metamorphic fluid in wall rock lithologies.</p></div><table style="margin-bottom: 1em" border="0" cellpadding="3" class="not_ep_block"><tr><th valign="top" class="ep_row">Item Type:</th><td valign="top" class="ep_row">Article</td></tr><tr><th valign="top" class="ep_row">Keywords:</th><td valign="top" class="ep_row">Gold, Bismuth, Mineralization, Laser Raman spectroscopy, Northern Territory </td></tr><tr><th valign="top" class="ep_row">Subjects:</th><td valign="top" class="ep_row"><a href="http://eprints.utas.edu.au/view/subjects/260100.html">260000 Earth Sciences > 260100 Geology</a><br /><a href="http://eprints.utas.edu.au/view/subjects/260000.html">260000 Earth Sciences</a></td></tr><tr><th valign="top" class="ep_row">Collections:</th><td valign="top" class="ep_row">UNSPECIFIED</td></tr><tr><th valign="top" class="ep_row">ID Code:</th><td valign="top" class="ep_row">1309</td></tr><tr><th valign="top" class="ep_row">Deposited By:</th><td valign="top" class="ep_row"><span class="ep_name_citation"><span class="person_name">Mrs Katrina Keep</span></span></td></tr><tr><th valign="top" class="ep_row">Deposited On:</th><td valign="top" class="ep_row">05 Jul 2007</td></tr><tr><th valign="top" class="ep_row">Last Modified:</th><td valign="top" class="ep_row">30 Jan 2008 15:26</td></tr><tr><th valign="top" class="ep_row">ePrint Statistics:</th><td valign="top" class="ep_row"><a target="ePrintStats" href="/es/index.php?action=show_detail_eprint;id=1309;">View statistics for this ePrint</a></td></tr></table><p align="right">Repository Staff Only: <a href="http://eprints.utas.edu.au/cgi/users/home?screen=EPrint::View&eprintid=1309">item control page</a></p>
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