Difference between revisions of "Sulfur"
(added discussion of troilite)
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Sulfur is availible in lunar soil in significant quantities,
Sulfur is availible in lunar soil in significant quantities, as as . , and the .
Several uses have been proposed for lunar sulfur, including [[In-Situ Propellant Production|rocket propellant]], production of sulfuric acid for industrial processes, and sealants<ref>[http://www.nss.org/settlement/moon/library/LB2-509-UsesOfLunarSulfur.pdf V. T. Vaniman, D. R. Pettit, G. Heiken. "Uses of Lunar Sulfur" Los Alamos National Laboratory, 1988]</ref>.
== References ==
== References ==
Revision as of 19:24, 15 September 2011
|In situ availability:||good|
|density:||(alpha) 2.07 g/cm3|
(beta) 1.96 g/cm3
|N ← O → F|
|P ← S → Cl|
|As ← Se → Br|
|Atomic radius (pm):||100|
|Bohr radius (pm):||88|
|Covalent radius (pm):||102|
|Van der Waals radius (pm):||180|
|ionic radius (pm):||(-2) 184|
|1st ion potential (eV):||10.36|
|Electrons Per Shell|
|2, 8, 6|
|Oxidation states:||+/-2, 4, 6|
Sulfur is a Non-metal in group 16.
It has a Orthorhombic crystalline structure.
This element has 4 stable isotopes: 32, 33, 34, and 36.
Sulfur is availible in lunar soil in significant quantities, principally in the form of troilite (FeS), comprising around 1% of the lunar crust. Magnetic benefication may be able to concentrate troilite out of the lunar regolith, as it is weakly magnetic when the crystal structure is incomplete, as well as being commonly associated with native iron. In addition, concentrated veins of troilite have been found in some lunar rocks, and it has been suggested that larger deposits of the mineral may exist.
- Sulfur on Wikipedia Cite error: Invalid
<ref>tag; name "wikisulfur" defined multiple times with different content
- I. Casanova. Feasibility and Applications of Sulfur Concrete for Lunar Base Development: A Preliminary Study. Lunar and Planetary Science XXVIII
- V. T. Vaniman, D. R. Pettit, G. Heiken. "Uses of Lunar Sulfur" Los Alamos National Laboratory, 1988