https://lunarpedia.org/api.php?action=feedcontributions&user=195.78.209.34&feedformat=atomLunarpedia - User contributions [en]2024-03-29T11:28:39ZUser contributionsMediaWiki 1.34.2https://lunarpedia.org/index.php?title=Ore_Bodies&diff=16805Ore Bodies2011-10-30T01:15:37Z<p>195.78.209.34: /* Ore Concentration */</p>
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<div>[[Image:OrangeApollo17.jpg|thumb|400px|Orange Soil discovered by [[Apollo 17]]]]<BR clear="all"/><br />
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<font size=5> What Ore Bodies can be found on the Moon? </font><br />
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For a [[mineral]] to be recoverable at a reasonable cost it must be found in large enough quantities and concentrated enough that commercial extraction is profitable. Such a concentration is an ore body.<br />
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==Where is Ore==<br />
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Ore bodies are rare. If the concentration is poor, then you will have to process too large an amount of rock to be attractive. If the quantity in a specific location is not large, then it is simply not worth expending the capital setting up an industrial operation. If the location is poor, then the cost to dig the ore out and for transportation out will be prohibitively expensive.<br />
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It is far more common to have a mineral dispersed over a large area in too low a concentration to be commercially exploited than to have a viable ore body. These dispersions are very common on the Moon. Such mineral distributions are much easier to spot from space than real ore bodies, but they are of little use to space settlers. Real ore bodies are best investigated by a geologist on the surface, human and robotic.<br />
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Super jzzaed about getting that know-how.<br />
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==Making Ore Deposits on the Moon==<br />
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The [[Moon]] has never been wet. The Moon has never had plate tectonics. The surface of the Moon has been continently gardened by [[meteorites]]. This mixing dilutes any natural [[ore]] concentrations. Valuable ore bodies on the Moon will be very hard to find.<br />
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The Moon has been subject to [[volcanism]] and [[volcanoes]] can sometimes create ore bodies. The most interesting of which would be [[volatile materials]] associated with [[vents]]. The orange regolith found in Apollo-17 was this type of deposit. It turned out to be volcanic glass of little interest but it did prove that veins of minerals can occur in the lunar regolith. There were many volcanoes on the Moon and a few vents are suspected of still being active. These warrant detailed investigation.<br />
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Another possible source of lunar ore deposits is meteorite strikes. This is the predominately geologic process on the Moon. One to two percent of the strikes are by [[iron]] and [[stony iron meteorites]]. One would think these would create ore bodies. Unfortunately they do not. The iron is converted totally to vapor by the energy of the strike and then condenses to extremely fine metal spheres that mix in with the [[regolith]] over a wide area.<br />
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Dude, right on there borhter.<br />
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We've arirved at the end of the line and I have what I need!<br />
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==Polar Deposits==<br />
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It is highly likely that hydrogen and its compounds are concentrated in dark [[craters]] at the [[Lunar poles]]. There are more than a hundred square kilometers of polar crater bottom that has not seen the light of the sun in a billion years. The small amounts of volatile compounds released in [[comet]] strikes on the Moon should have accumulated in these areas over geologic time. In our stories these areas are called "the cold and the dark".<br />
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We do not currently know the extent or the physical form of these deposits. Finding this information will be one of the first goals of our new lunar explorations.<br />
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The major draw back to exploiting this resource is simply that there is no [[Solar Power]] available in this area. It is not clear how we will mine these regions.<br />
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[[Category:Business]]<br />
[[Category:Gases]]<br />
[[Category:Selenology]]<br />
[[Category:Mining]] <br />
[[Category:Chemistry]] <br />
[[Category:ISRU]] <br />
[[Category:Solids]]</div>195.78.209.34https://lunarpedia.org/index.php?title=List_of_Offworld_Medical_Risks&diff=16787List of Offworld Medical Risks2011-10-28T05:48:46Z<p>195.78.209.34: /* Ionizing Radiation */</p>
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<div>This is a list of articles covering dangers to our people and mission. <br />
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The lists of [[hazard]]s and categories below is similar to those used by [[NASA]] and the [[DOD]] in [[Systems Safety]] Analysis. <br />
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This field can be difficult and confusing, and it helps to have some clear definitions. <br />
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e.g. <br />
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*[[Mishap]]: an unintended condition or event which can result in illness, death, partial or total disability, and/or injury. An [[accident]] is an example of a mishap, so are [[infection]]s, or chronic exposure to toxic agents. <br />
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*[[Hazard]]: the finite possibility (non-zero probability) of a [[Mishap]]<br />
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*[[Risk]]: there are a couple of different definitions of risk. A colloquial definition is the probability of a hazard, which is not quite the same thing as a hazard by itself <br />
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*[[Risk level]]: in NASA/military parlance, a "risk Level" is a combination of the Severity of a mishap/hazard, combined with the Probability of mishap/hazard. <br />
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Typical usage of "Risk Level" can be as follows: <br />
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{| width=75% <br />
| width=11% | '''Severity ''' <br />
| width=11% | '''Probability''' <br />
| width=66% | '''Comment ''' <br />
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| colspan="3" height="0" style="border:solid #BFBFBF 1px" | <br />
|- <br />
| [[High]] || [[High]]|| Unacceptable or emergency situation needing immediate attention || <br />
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| [[Low]] || [[High]] || Perhaps acceptable to deal with via precautions, e.g. protective equipment and training || <br />
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| [[High]] || [[Low]] || Extensive verifiable Hazard controls required || <br />
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| [[Low]] || [[Low]] || Probably acceptable, might not need special precautions || <br />
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|} <br />
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*Hazard Cause: There can be confusion between a hazard versus a hazard cause. For simplicity, it can be useful to consider a hazard as a final condition or undesirable event. A hazard cause is a precursor condition or triggering event which could result in a hazard. For example, electrical or mechanical component failures are hazard causes which can result in hazards such as collision or explosion. <br />
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*Hazard Control: a product feature, or procedural step, which tends to prevent a hazard. Such as an arming switch, or structural margin of safety. <br />
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==Psychological/Human Factors== <br />
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*[[Agoraphobia]] <br />
*[[Claustrophobia]] <br />
*[[Depression]] <br />
*[[Circadian Rhythm Dysfunction]] <br />
*[[Fatigue]] fatigue can result in operator error <br />
*[[Training]] operators need to be well trained in dangerous tasks <br />
*[[Information]] accurate and useful information must be displayed to operators in a timely manner to permit correct decisions <br />
*[[Procedures]] - checklists, operating manuals, help docs and procedures must be correct, complete, readable, comprehensible and anticipate unusual scenarios <br />
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==Physiological== <br />
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===Zero or Low Gravity=== <br />
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*[[Bone Loss]] <br />
*[[Muscular Atrophy]] <br />
*[[Immune Deficiency]] <br />
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===Physical Environments=== <br />
*[[Acoustic damage]] <br />
*[[G Force]] - broken bones, blackout, high speed projectiles <br />
*[[Confined Space]] a person trapped in a confined space can run out of air <br />
*[[Meteor Hazard]] -- Will a meteor puncture (decompress) your pressurized living space? <br />
*[[Industrial Accident]] (the list is endless) <br />
*[[Roof Support]] -- Consider the problem of roof collapse. <br />
*[[Collision]] vehicles, spacecraft <br />
*[[Suspended Load]] -- e.g. cables fail resulting in large falling objects <br />
*[[Construction activity]] -- falling cranes, bulldozers crushing workers <br />
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Keep these articles coming as they've onpeed many new doors for me.<br />
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===Fire/Explosion=== <br />
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*[[Flammable Atmosphere]] - a stoichiometric mix of oxygen/air with a flammable vapor can result in large explosion <br />
*[[Flammable Material]] <br />
*[[Ignition Source]] <br />
*[[Flammable Gas]] <br />
*[[Flammable Liquid]] <br />
*[[Oxygen]] <br />
*[[Oxidizer]] <br />
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===Toxins=== <br />
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*[[Toxic materials]] - e.g. Hydrazine and other propellants <br />
*[[Toxic gasses]] <br />
*[[Liquid Toxins]] <br />
*[[Solid Toxins]] <br />
*[[Carcinogens]] <br />
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===Corrosives=== <br />
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*[[Chemical burns]] <br />
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===Temperature Extremes=== <br />
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*[[Cold Burns]] <br />
*[[Hot Burns]] <br />
*[[Hypothermia]] <br />
*[[Frostbite]] <br />
*[[Heatstroke]] <br />
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===Non-Ionizing Radiation=== <br />
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*[[Lasers]] <br />
*[[RF]] <br />
*[[Infrared]] <br />
*[[Concentrated Sunlight]] <br />
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Unbelievable how well-written and ifonmrtaive this was.<br />
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===Lack of Breathable Atmosphere=== <br />
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*[[Inhaling Lunar Dust]] <br />
*[[Dust]] - lunar dust represents pervasive and unusual problems <br />
*[[Silicosis]] is a disease of the lungs caused by breathing very fine silica dust particles, such as [[lunar dust]] <br />
*[[Smoke inhalation]] <br />
*[[Asphyxiation]] - e.g. from Nitrogen, Helium or other inert gases <br />
*[[Carbon Dioxide]] <br />
*[[Hypoxia]]<br />
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===Inadequate Food/Water=== <br />
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*[[Food poisoning]] <br />
*[[Poor Sanitation]] <br />
*[[Dehydration]] <br />
*[[Vitamin Deficit]] <br />
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===Improper Pressure=== <br />
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*[[Burst eardrums]] <br />
*[[Throat irritation]] - from breathing pure low pressure O2 <br />
*[[Exposure to Vacuum]] or [[Decompression]] <br />
*[[The Bends]] <br />
*[[Nitrogen Narcosis]] <br />
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{{hazards}}<br />
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[[Category:Hazards]]</div>195.78.209.34