Bilanga | has image
 |  |
is an instance of diogenite |  |
is an instance of meteorite fall |  |
is an instance of oriented meteorite  |  |
has name Bilanga |  |
has fall date 10:30 am October 27, 1999 |  |
has fall coordinates 12° 27' N., 0° 05' W. |  |
has fall location Bilanga Yanga and Gomponsago, Burkina Faso, Africa |  |
has mass 25 kg |  |
diogenite | has letter designation ADIO |  |
has characteristic mineral hyperstene |  |
has total mass of finds 68 kg |  |
has number of finds 8 |  |
meteorite fall | has value higher because the fall was witnessed |  |
has fall description what witnesses saw or what was recorded by instruments |  |
has weathering negligible due to quick recovery of meteorite before corrosion begins |  |
oriented meteorite | has shape conical from preferential ablation during atmospheric passage |  |
has probability of occurence 5 % of stony meteorites |  |
has probability of occurence 28 % of iron meteorites |  |
has probability of occurence higher for non-spherical, flattened or angular meteoroids |  |
HED meteorite | is an acronym for Howardite, Eucrite, Diogenite |  |
has origin 4 Vesta |  |
has minerology orthopyroxene, olivine, chromite; pigeonite, calcic plagioclase, silica |  |
has petrology coarse-grained orthopyroxenites, gabbros, fine- to coarse-grained basalts, brecciated |  |
has likely origin cumulates, crystallized melts, impact mixing |  |
meteorite | has fall map which appears as an elongated footprint which depends on impact angle, airbursts, and impact velocity |  |
can have crater image |  |
has original mass which can over an order of magnitude greater than total mass of fragment(s) collected at the impact site |  |
has composition often minerals not found on Earth |  |
has relative abundance |  |
has impact velocity when it hits the ground which is smaller than its velocity before it enters the atmosphere |  |
has impact angle |  |
has weather resistance which depends on its composition |  |
has monetary value large if the fall was witnessed |  |
often produce power outages and failures in electrical equipment due to EMP (electromagnetic pulse) |  |
can be associated with crater |  |
has origin meteoroid from interplanetary space or fragment dislodged from another planet, moon or planetesimal |  |
vaporizes completely if size is between 3 micrometers and 3 millimeters |  |
can survive fall if size is larger than 3 mm and velocity is less than 24 km per second |  |
can survive fall if it fragments because smaller pieces with less mass are more easily slowed by the atmosphere |  |
has ablative mass loss depending on composition, more friable stony meteoroids loses more mass than iron meteoroid |  |
has ablative mass loss directly proportional to initial velocity |  |
can shatter during impact phase |  |
can fragment during meteor phase |  |
has fragmentation probability during meteor phase which depends on composition |  |
plutonic rock | has solidification mechanism cooling in deep underground chambers |  |
has solidification timescale very slow |  |
fractional crystallized rock | has genesis fractional crystallization |  |
rock | has part mineral |  |
has texture |  |
has genesis |  |
gravitationally separated rock | has property formed by separation of molten rock in a gravity field |  |
achondrite | has distinguishing feature no chondrules |  |