Plessite is the fine-grained material between the lamellae. Kaposfüred iron meteorite, Hungary.
Plessite is a meteorite texture consisting of a fine-grained mixture of the minerals kamacite and taenite found in the octahedrite iron meteorites. It occurs in gaps (its name is derived from the Greek "plythos" meaning "filling"[1]) between the larger bands of kamacite and taenite which form Widmanstätten patterns.
Many types of plessite exist and vary in formation mechanism and morphology. Some types of plessite as named by Buchwald's "Iron Meteorites" and Massalski's "Speculations about Plessite" are:[citation needed]
acicular or type I plessite
black or type II plessite
cellular or type III plessite
comb plessite
net plessite
pearlitic plessite
spheroidized plessite
^according to Mindat, a mineral database and mineralogical reference website
about Plessite" are:[citation needed] acicular or type I plessite black or type II plessite cellular or type III plessite comb plessite net plessite pearlitic...
iron cools and kamacite is exsolved from taenite in the form of lamellas. Plessite is a more fine-grained intergrowth of the two minerals in between the lamella...
between the kamacite and taenite lamellae, a fine-grained mixture called plessite is often found. An iron nickel phosphide, schreibersite, is present in...
octahedrites a fine intermixture with kamacite can occur, which is called plessite. Taenite is one of four known Fe-Ni meteorite minerals: The others are...
(not approved by IMA) Pitchblende (a massive impure form of uraninite) Plessite (mixture of kamacite and taenite) Potassium alum or potash alum (as a mineral...
with taenite that it is difficult to distinguish them visually, forming plessite. The largest documented kamacite crystal measured 92×54×23 cm (36.2×21...
meteorites that consists of the mineral taenite with minor amounts of plessite, troilite, and microscopic lamellae of kamacite. Ataxites are the most...
planet and not a planetesimal or asteroid (See asteroidal achondrite). Plessite – a fine grained intergrowth found in meteoric iron consisting of kamacite...
typically accompanies kamacite, and more rarely schreibersite, cohenite or plessite. Cliftonite was first considered to be a new form of carbon, then a pseudomorph...
(Ti4+,Sc,Al,Mg,Zr,Ca)1.8O3 Pentlandite iron nickel sulfide:(Fe,Ni)9S8 Plessite Presolar grains Ringwoodite (discovered in the Tenham meteorite) Mg2SiO4...
kamacite lamellae. Occasional areas of coarse to fine acicular plessite and net plessite are Neumann lines and rhabdites. Sparsely developed Brezina lamellae...
patterns. The lamellae are smaller than 20 μm wide and lie in a matrix of plessite. The Tlacotepec meteorite is an octahedrite, making a notable exception...
pyroxene. Accessory minerals include meteoric iron (kamacite, taenite and plessite), magnetite, troilite, plagioclase, schreibersite, maskelynite and chromite...
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