Impact rocks - Impactites
"Impact rocks" and "impactites", which can be considered synonymous, are informal, somewhat woolly terms. They basically describe rocks that have been produced in a meteorite impact process like impact melt rocks, suevites and various impact breccias. However, very limited definitions of the term impactite like
"slag-like glassy object found on surface of the earth, probably formed from rock melted by the impact of a meteor"
can also be found in the Internet (http://www.tiscali.co.uk/reference/dictionaries/difficultwords/data/d0006866.html).
In the broader sense and frequently used on the commercial level (shops, ebay etc), impactites comprise all items related with meteorite impacts such as impact glasses, tektites, shatter cones, pseudotachylites, and even samples from the K/T boundary and rocks that may possibly have formed in an impact (e.g., the Sudbury anthraxolite).
Here it should be pointed out that the term "shatter cone" does not at all describe a specific rock but stands for a special type of fracture markings resulting from shock load. Like plumose, lancet or conchoidal fracture markings, shatter cones may develop in all kinds of rocks.
Even among impact researchers the impactite nomenclature is discussed:
http://209.85.129.132/search?q=cache:cJt9vbBMJwUJ:www.lpi.usra.edu/meetings/lmi2008/pdf/3033.pdf+impactite&hl=de&ct=clnk&cd=10&gl=de&client=firefox-a
On our website, we have subdivided the Impact rocks - Impactites category into the four individual pages:
Carbonate melt rock, Azuara (Spain) impact structure
Suevite, Wanapitei (Canada) impact structure
Polymictic impact breccia, Rubielos de la Cérida (Spain) impact basin
and
Shatter cone, Kentland (Indiana, USA) impact structure