14306 (57) Clast-rich Impact Breccia
 >View Microscope
Fact sheet
Description: 

14306 is a clast-rich, crystalline matrix breccia thought to be from the Fra Mauro Formation. It is a multi-generation breccia and is cut by a prominent vein of black glass, probably produced by the last impact. 14306 has little matrix. Ferroan anorthosite and norite are important constituents of the breccia.

14306 weighed 584 grams before analysis. Dating of zircon in norite clasts from this sample give ages from 4.18 to 4.21 billion years. The breccia event represented by 14306 has not been dated (probably 3.9 b.y., by analogy to other Apollo 14 breccias). 

Further details of this and other Apollo samples are here: http://curator.jsc.nasa.gov/lunar/

In Place
In Time
Accuracy:
Timescale:
Not known
Ma = Millions of years ago
In Focus
Collection:
What\
Type:
Type: 
metamorphic
What\
Rock-forming minerals:

Rock forming mineral:

What\
Accessory minerals:

Accessory minerals:

What\