Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!wuarchive!rex!ukma!seismo!dimacs.rutgers.edu!aramis.rutgers.edu!athos.rutgers.edu!nanotech From: neufeld@aurora.physics.utoronto.ca (Christopher Neufeld) Newsgroups: sci.nanotech Subject: Re: availability of elements Message-ID: Date: 26 Mar 91 23:20:37 GMT Sender: nanotech@athos.rutgers.edu Organization: University of Toronto Physics/Astronomy/CITA Lines: 41 Approved: nanotech@aramis.rutgers.edu In article chris@fs07.webo.dg.com (Chris Moriondo) writes: >My >question is, can anyone tell me where I might find estimates of the >relative occurence of the elements in: the crust of the earth; the >entire volume of the earth; the solar system; and the universe? > Well, I can't help much with the later entries in the list, but check any recent CRC for all naturally ocurring elements in the Earth's crust: Oxygen: 464 g/kg crust Silicon: 282 g/kg Aluminum: 83.2 g/kg Iron: 56.3 g/kg Calcium: 41.5 g/kg Sodium: 23.6 g/kg Magnesium: 23.3 g/kg Potassium: 20.9 g/kg Titanium: 5.70 g/kg Hydrogen: 1.40 g/kg Phosphorus: 1.05 g/kg Manganese: 950 mg/kg Fluorine: 625 mg/kg and, dropping down the list some, a few selected important elements: Chlorine: 130 mg/kg Copper: 55 mg/kg Uranium: 2.7 mg/kg Silver: 0.07 mg/kg Platinum: 0.01 mg/kg Gold: 0.004 mg/kg Isotopic fractions are also available in the CRC. For instance, deuterium has a natural abundance of 0.015%, with the rest protium (simple hydrogen) according to the isotope tables. -- Christopher Neufeld....Just a graduate student | Too much self-love just neufeld@aurora.physics.utoronto.ca Ad astra! | makes you jealous of cneufeld@{pnet91,pro-cco}.cts.com | the people who envy you. "Don't edit reality for the sake of simplicity" |