Table 6 in The Tumbarumba Basaltic Gem Field, New South Wales: In Relation to Sapphire-Ruby Deposits of Eastern Australia

Table 6. Summary of basalt characteristics, Tumbarumba-Snowy Mountains Region. phenocryst minerals (modal)ground%oliv.aug.plag.qtz.compositesmass %alteration degreeR.L. (m)section numberloc.west of Tumbarumba: Ruby Creek (RC), Yorkers Creek (YC)4060minor122014639YC2575major100013823RCMDminor95013822RCsouth of Tumbarumba: Tumbarumba basalt quarry (TB), Tooma (TO)1585major61014646TB1585minor46014662TO1585m inor48014664TO1585m inor55014669TOnortheast of Tumbarumba: Jimmies Road (JR), Rutherford Ridge (RR), Buddong Creek, (BC), Pilot Hill (PH), Parson’s Gully (PG)4060major 120013819PG2080minor122013817PG595negligible136014641JR3070negligible127514650RR2575negligible 110014652BC3070major115014653PH4060major115014655PHnorth of Tumbarumba: Miller’s Property (MP), Laurel Hill (LH)1090minor86013820MP2080minor99013833LH3070minor99013826LH2080minor106013830LH3070minor100013828LHSnowy Mountains Region: Yarrangobilly (YB), Cabramurra (CA), Talbingo Ruby Creek (TR), Kiandra (KI)2080minor1150Y13YB3070minor1200Y26YB595minor>1000DR1YB2080major129013813TR3070major152213810KI3070minor132513834CA4060minor154013832CA1090major>140013811KI3070minor132513835CA2575minor139013836CA Thin section numbers are Australian Museum DR registration numbers, except for Y13, Y26 and DR1 (R.A. Osborne, University of Sydney). Abbreviations: MD, micro-dolerite; oliv., olivine; aug., augite; plag., plagioclase; qtz., quartz.