Doug, Three sites: United States Geological Survey (one of my fav sites) http://www.metal-pages.com/metals/yttrium/ http://en.wikipedia.org/wiki/Caesium Bev -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Douglas Pauls Sent: Thursday, July 07, 2011 8:40 AM To: [log in to unmask] Subject: Re: [TN] NTC Friday Element Quiz - the Question I am curious Bev. What source do you use to get current prices for these rare elements? Doug Pauls Bev Christian <[log in to unmask]> Sent by: TechNet <[log in to unmask]> 07/07/2011 06:29 AM Please respond to TechNet E-Mail Forum <[log in to unmask]>; Please respond to Bev Christian <[log in to unmask]> To <[log in to unmask]> cc Subject Re: [TN] NTC Friday Element Quiz - the Question Aha! Mike Fenner is right, I am wrong. I had a mistake in logic. When I was talking about discovery dates, I should have eliminated Tb and Re, NOT the other way around, leaving (with prices) Sc 1937 $6750/kg, 1991, 99.999% purity Rb 1860s $45,000/kg, 1997, 99.8% purity Y 1828 $69/kg, 2002, 99.9% purity Cs 1860s $10,000, 99.8% purity Gd 1886 $220/kg, 2011, 99% Tl 1860s $~1200, 1998, ? So, Brian Ellis nailed it. Red-faced Bev -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Bev Christian Sent: Monday, July 04, 2011 10:18 PM To: [log in to unmask] Subject: Re: [TN] NTC Friday Element Quiz - the Question This is a tuffy. If it wasn't produced pure until 1928, then we can eliminate any elements discovered after that time, thus out go all the elements after uranium, plus Tc, Pm, At and Fr. If it is like sodium, then if we presume a +1 oxidation state, that gives us: H, Li, B, C, N, O, Na, Mg, Al, Si, P, S, Cl, K, Sc, V, Cr, Mn, Fe, Co, Ni, Cu, Ga, Ge, Br, Rb, Y, Zr, Mo, Ru, Rh, Ag, In, I, Cs, Gd, Tb, W, Re, Os, Ir, Au, Hg, Tl If we then eliminate the ones with a known biological role (I presume in humans), then we are left with: Al, Si, Sc, V, Ga, Ge, Br, Rb, Y, Zr, Ru, Rh, Ag, In, Cs, Gd, Tb, W, Re, Os, Ir, Au, Hg, Tl If we then eliminate those that I would consider to have SIGNIFICANT use in industry we are left with: Sc, Rb, Y, Cs, Gd, Tb, Re, Tl Discovery dates Sc 1937 Rb 1860s Y 1828 Cs 1860s Gd 1886 Tb "not until ion exchange" Re 1928 Tl 1860s So it looks like it is down to Tb and Re. But $ Tb $3400/kg Re $4000/kg But Pt is $1700/troy ounce. I'm stuck! Bev -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of David D. Hillman Sent: Friday, July 01, 2011 8:08 AM To: [log in to unmask] Subject: [TN] NTC Friday Element Quiz - the Question Hi folks - Here is the Friday Element Quiz Question: The Question: This element is used for research purposes only. There are no commercial outlets for the element as Sodium can be used to accomplish the same tasks at a much lower cost. This element is more expensive than gold or platinum (*** per my reference source). A pure sample of this element was not produced until 1928. Apples contain 50 ppm of this element but plays has no known biological role. Bonus Question: Name the mineral that contains this element. The quiz winner will get to put Clumpy and Kloumpios to work for them for the week. So far Clumpy and Kloumpios have: Week 1 Lamar Young, SCS Coatings - accomplished nothing (drank lots of coffee) Week 2 Bev Christian, RIM - conducted REACH material testing Week 3 Drew Meyer, Benchmark Electronics Inc. - Solderability testing and mowed the lawn Week 4 Ian Fox, Goodrich - had an epic journey of travel Week 4 Gary Ferrari, Garrick Global - unknown Week 5 Fredrick Miller, Astrolab - unknown Week 6 David Nelson, Raytheon - Were tackling dummys for Dallas Cowboys Week 7 Graham Collins, L3 Communications - Cleaned gutters and painted window trim Week 8 Bill Noel, ITT Geospatial Systems Division - unknown Week 9 Steve Gregory of RD Circuits - unknown Week 10 David Bealer of Watchfire Signs - descaled the in-line wash machine! Ouch! Week 11 Dick Krug of Sparton Corporation - assisted with AS9100 quality management systems requirements audit Week 12 Steve Creswick of Balanced Enterprise Solutions - Acted as Steve's "go fer" due to a broken leg! Week 13 Gebhard Neifer, Delphi - conducted a plasma pre treatment Taguchi DOE for a sealing process Week 14 Bev Christian, RIM - assisted with a tin pest investigation/test Week 15 Bev Christian, RIM - assisted Bev shoveling snow Week 16 David Bealer of Waatchfire Signs - assisted with reflow profiling Week 17 Brian Ellis, rumored to be retired - assisted with rewiring the house, had a tractor accident and found his cousin Kloumpios Week 18 Denny Fritz, SAIC - assisted with tin whisker inspection/examinations Week 19 Graham Collins, L3 Communications - assisted with scraping barnacles, boat paint and boat engine maintenance Week 20 Mark Woolley, PTRL Laboratory Avaya - assisted with weather observations (70F to snow) and resolving electrochemical migration failures Week 20 Tom Carroll, Boeing Defense, Space and Security - assisted with commercial aircraft galley inspection Week 21 Brian Ellis, supposedly retired, and Tom Carroll, Boeing Defense, Space and Security - assisted with root cause corrective action tasks - assisted with nothing but catching up with the family Week 22 Drew Meyer, Benchmark Electronics Inc. - assisted with metallographic cross-sections and Dye & Pry testing Week 23 Bev Christian, RIM - assisted with a creep corrosion project and the setting up of an oxygen bomb Week 24 Steve Gregory, RD Circuits - assisted with ????? Week 25 Ahne Oosterhof, A-Laser - assisted with stencil aperture data analysis and split/stacked firewood Week 26 Scott Post, Delphi - assisted with ???? Week 27 - assisted with ???? Dave Hillman Rockwell Collins [log in to unmask] ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. 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