[meteorite-list] vaca muerta euc- what is it?

[mckinney trammell]

i have several pieces of vaca muerta "eucrite". it is not like any of the other 
euc (soft, granite appearance, white). this is very hard , has a "compressed 
granular" textue and is homogenous- all one type of mineral. it is glass/ 
olivine -like and take a very hi polish. what is this mineral? why is it called 
a "Eucrite" since it does not resemble any of the other ones out there? are 
there other "eucrites" made of this material? if so got pix? any info or 
additional other pix of this or other eucrites made of this material 
appreciated.