does basalt contain radioactive isotopes?
958216
Is all basalt radioactive , No. Might some basalt havae radioactive isotopes, yes maybe.sometimes
484798
Stable? An isotope stable? Relative to other other isotopes maybe.
696104
No; very few isotopes have been given individual names (there are far too many of them). The only ones I can think of are deuterium (hydrogen-2) and tritium (hydrogen-3).
798055
First the answer 129p and 130n is incorrect.  There is no element 129 and if there were it would certainly have more than 130 neutrons.  I think you are missing a piece of information, that being the atomic number or identity of the element. There are a number of elements that have an isotope that has a mass number of 259.  The 259 is the number of neutrons plus protons.  If you know the identity of the element, then you know number of protons (atomic number) and you can calculate the number of neutrons.  For example, if the isotope is No-259 then Nobelium has 102 protons and isotope would have 259-102 = 157 neutrons.  The number of electrons in an atom is equal to the number of protons.
461519
Francium is radioactive. Its most stable isotope has a half life of only 20 minutes or so. \nThis means that the only Francium present in the earth crust are those atoms that originated from other atoms having decayed. Francium has been detected in Uranium ores but the total quantity present at any time does not exceed 20 grams or so.
561000
Is it not easier to type isotopes into a search engine?\n\nCarbon 14 is used for carbon-dating...\n\n"isotopes usage" in Yahoo! gave me the second link:\nHydrogen 3\nSodium 22\nSulphur 35\nCadmium 109\n- type these into Yahoo!
1087127
I'll tell you and won't kill you.\n\nBut don't even think of trying this at home.\n\nThe ore (found in rocks, mines, mountains) contains a couple types (isotopes) of uranium, mainly  U-235 (the one for nuclear fuel) and U-238 (depleted uranium, for armor piercing rounds).\n\nThese have different weights, so you can use a centrifuge (same as the spinner that seperates blood cells from plasma based on weight) to seperate the lighter atoms of U-235 from the heavier U-238. Thus all the fuss about who may or may not be buying aluminum tubes in the middle east to make centrifuges.
157318
For something to be dated using a radioactive technique, it has to include radioactive materials. Granite is radioactive (see attached), but its level of radioactivity is usually quite low (no more than any other natural material). This makes dating granite a bit challenging, but it can be done (see example in 2nd reference). Granite usually contains a little U-238 which does decay, and this can be used to date granite. It also contains some Rb-87 which decays into Sr-87, and the Rb-Sr dating techniques can be used to date granite.
606326
Lava is molten rock. It is red hot which shows it is about 600 centigrade.\nThe melting point must be lower. It depends strongly about the kind of rock (basalt, granite, gneis, ...).
171052
according to my source it is a volcanic remnant being... um, harvested (for lack of a better word) for lava rock.  Just a note, most active or recently (in geological history, not ours) active volcanos can be told by thier names, generally being called Mount ______, instead of ________ Mountain.  try it :)
702930
certainly NOT He!\n\nThe main one is water... along with other common volatiles CO2 and Cl.  As these increase, so does explosiveness.\n\nHigher silica lavas are more likely to be explosive.
205251
Granite and most other igneous rocks are made of more than one mineral. In granite you can see the individual mineral crystals, which are often quartz, plagioclase feldspar, and potassium feldspar. In other igneous rocks like basalt the minerals may not be visible to the naked eye. Basalt will included olivine, pyroxene, and plagioclase feldspar in most cases.\n\nSandstone is an example of a rock often made of more than one mineral. In addition to quartz grains, sandstone may contain feldspars and many other minerals. Identification of these minerals can often be used to determine the provenance, or original source of the grains that make up the sandstone. \n\nLimestone is an example of a sedimentary rock that often contains only one mineral. Limestone is sometimes composed of 99.9% calcium carbonate, or by its mineral name, calcite.  In some cases, it will have more than one mineral, and may be a mixture of calcite, aragonite, dolomite, siderite and other carbonate minerals, as well as sometimes having small quantities of quartz grains.
638038
No, they don't.  \nRare earth elements consist of the Lanthanide Series and the Actinide Series.  Both series span several columns of the periodic table, which means that there are many different valencies available for rare earth elements.
629035
There may be some, but it's too little to be a health concern.  Even the ambient radiation at Bikini Atoll is not extreme; the danger comes from the local trees (and any local crops), which would take up and concentrate radioisotopes in their tissues.
678919
hhhmmmm....must be igneous...um...olivine. thats what it says. Pyroxene and plagioclase are also common
606547
More than 4.5 billion years ago, the surface of the Moon was a liquid magma ocean. Scientists think that one component of lunar rocks, called KREEP (potassium, rare earth elements, and phosphorus), represents the last chemical remnant of that magma ocean. KREEP is actually a composite of what scientists term "incompatible elements": those which cannot fit into a crystal structure and thus were left behind, floating to the surface of the magma. For researchers, KREEP is a convenient tracer, useful for reporting the story of the volcanic history of the lunar crust and chronicling the frequency of impacts by comets and other celestial bodies.\n\nThe lunar crust is composed of a variety of primary elements, including uranium, thorium, potassium, oxygen, silicon, magnesium, iron, titanium, calcium, aluminium and hydrogen, as determined by spectroscopy.\n\nA complete global mapping of the Moon for the abundance of these elements has never been performed. However, some spacecraft have done so for portions of the Moon; Galileo did so when it flew by the Moon in 1992.[7] The overall composition of the Moon is believed to be similar to that of the upper parts of the Earth other than a depletion of volatile elements and of iron.
981733
As to the age of the earth, lets look at the rock granite.  Granite forms the layer of rock from beneath sedimentary rocks to the mantel of the earth.  Russians have been working in the science of drilling deep holes.  They have been able to drill down six miles, and still find that the rock is granite.  They believe that the granite goes down at least 12 miles. Now all granite contains trillions of what are known as Polonium Halos.  Polonium (Po) is a radioactive element with three different isotopes.  Polonium breaks down by emitting alpha particles.  It is these particles that are trapped in the granite and make the halos.  Now in order for these halos to occur, the mother element (i.e. Polonium) must be present in the solid granite.  Once the Polonium is encased in the solid granite and the alpha particle is given off the Halo is formed.  There is no question from any qualified scientist that the Halos are formed this way.  Now here is the problem for evolutionists, who say that the earth is millions or even billions of years old.  The half-lives of the Polonium isotopes are extremely short.  One is only a few seconds; the second is only three minutes and the third is just over a day.  The second isotope produced the overwhelming majority  of halos that we see.  This means that all the Polonium atoms were encased in SOLID granite within a three-minute interval.  This means that ALL the granite in the world was produced in about 3minutes.  Now before you say impossible, this is consistent with the nature of granite.  You see if you heat granite to a molten state, when it cools and solidifies it becomes another rock.  Granite cannot come from a molten state.  However, evolution teaches that the earth was molten for millions of years.  How can anybody indicate that evolution is a fact when its teachings are at complete odds with observed science?