(Extremely Rare), Lunar Feldspathic Breccia Meteorite
Lunar Breccia anorthite breccias are the lithified aggregates of clastic debris and melt generated by meteorite the heat and pressure of these impacts fuses small rock fragments into new rocks, called breccias. Lunar breccias Meteorites,
NASA assessed the value of the rocks at around $50,800 per gram in 1973 dollars, based on the total cost of retrieving the samples.
breccias have a wide variety of matrix-textures - from fragmental to vitric to crystalline Lunar breccias can originate from either large or small craters and/or from different radial distances from large craters. Most lunar breccias are of a polymict nature. Mixing of rock types can occur in a single impact or can be the result of many impacts
lunar breccias are in a fine-grained matrix of lithic and mineral fragments. The compositions of lunar breccias are also consistent with mixtures of known lunar rock types All lunar breccias have relatively high Al2 O3 content due to the abundance of plagioclase in the lunar highlands. It is not necessary to invoke a high percentage of exotic rock to explain the chemical composition of any lunar breccia.
Compared with pristine lunar rock, all lunar breccias contain relatively high Ir and Au contents. It is thought that these trace elements come from meteoritic material that has bombarded the Moon. (Magnetic Polarity)= Melted iron particles from meteorites can be found in the matrix of lunar breccias. Other meteorite minerals are completely obliterated.
