Carlton meteorite, Carlton, Hamilton County, Texas, USAi

Regional Level Types
Carlton meteorite	Meteorite Fall Location
Carlton	- not defined -
Hamilton County	County
Texas	State
USA	Country

Iron, fine octahedrite (IAB-sLM; Of)
Found 1887, 81.2 kg

An Fe-Ni rich mass (~13% Ni) was plowed up about 8 miles (13 km) south of Carlton, passed through several hands, and — eventually —distributed via the Ward & Howell collection with several moderately large pieces going to several museums. The meteorite is texturally and mineralogically dominated by its octahedral framework, but plessite, martensite, traces of Neumann bands, and small rhabdite needles give abundant evidence that the meteorite has experienced significant pre-terrestrial shock. While schreibersite is quite prominent, other minor minerals such as troilite, graphite, and haxonite are quite unevenly distributed. Carlton also has received some special attention as a new mineral, Chladniite (a Na-Ca-Mg phosphate) was discovered in a chlorapatite-rich inclusion. Chladniite is one of several phosphates discovered in iron meteorites during the past few decades.

Carlton is currently classified as a member of the low Au, medium-rich Ni subgroup within the IAB group. The IAB group has only recently been consolidated and now includes a number of meteorites such as Carlton, previously classified as a IIICD iron. As of late 2014, the IAB Group or Complex represented approximately one quarter of all recovered iron meteorites. As of 2000, Carlton masses of greater than 5 kg were in the possession of the Field Museum in Chicago and the Naturhistorisches Museum in Wiens (Vienna) while several smaller, medium-sized masses are distributed elsewhere as well.

Other Regions, Features and Areas containing this locality

References