Sample Petrographic Description
Sample Number | MCY 05239 |
Newsletter | 30,1 |
Location | MacKay Glacier |
Field Number | 17363 |
Dimensions (cm) | 3.0 x 2.0 x 1.5 |
Weight (g) | 19.34 |
Original Classification | Mesosiderite |
Mineral Composition (%Fa & %Fs) | |
Fayalite (mol%): 34-39;Ferrosilite (mol%): 27-36 | |
Weathering | |
C | |
Fracturing | |
B | |
Macroscopic Description - Kathleen McBride | |
100% of the exterior is covered with rusty brown/black fusion crust. The interior has a rusty, granular textured matrix with high metal. | |
Thin Section Description (,2) - Tim McCoy, Valerie Reynolds | |
The section is a breccia composed of angular isolated grains up to 1.0 mm and clasts of orthopyroxene (Fs27-36Wo4), olivine (Fa34-39, anorthitic feldspar (An90-95 Or0-1), metal, troilite and oxides. Minor iron oxide staining is present. The meteorite is a mesosiderite. |