Planetary object
- Family
- soil
- Name
- Lunar soil 78220
- Secondary name
- Lunar soil 78221; Lunar soil 78222; Lunar soil 78223; Lunar soil 78224
Geolocation
- Body name
- Moon
- Place
- Station 8, at base of Sculptured Hills, south of Wessex Cleft. Taurus-Littrow Valley.
Coordinates
- Position type
- point
- System
- Moon 2000
- Coordinates
-
Point Latitude Longitude Altitude #1 20.1923° 30.7655° -2622.0 m - Comments
- collected from the regolith surface under a 2-3 m diameter norite boulder rolled over by the crew - Location is that of the ALSEP (Apollo Lunar Surface Experiments Package)
- Name
- Apollo 17
- Type
- human lander-rover
- Agency
- NASA
- Date begin
- 1972-12-11
- Date end
- 1972-12-14
- Instrument type
- scoop
- Date begin
- 1972-12-11
- Container
- Returned in sample container 2 in vacuum.
- Contamination
- Processed in N2
- Masse
- 344.8
- Description
- very mature soil from beneath the norite boulder
- State
- granular
- Composition type
- mineral
- Composition
- agglutinates: 57%, breccia: 13.3%, basalt: 1%, anorthosite: 1.3%, gabbro: 0.3%, plagioclase: 5%, Clinopyroxenes: 8.9%, orthopyroxenes: 3.6%; olivie: 1.7%, ilmenite: 1%, and glass: 7%
- Comments
- 108.3 g of 78220 are currently in reserve, the remaining has been sieved <1mm (78221), 1-2mm (78222), 2-4mm (78223) and 4-10mm (78224)
- Sample type
- soil
- Sample subtype
- unsieved
- Soil size
- unsieved
- Comments
- average grain size is 43 microns
- Soil particles
-
Type agglutinates breccia fragments pristine crystalline rock fragments mineral fragments glasses Mass fraction (%) 57.0 13.3 2.6 20.2 7.0 - Maturity
- very mature soil
- Maturity index Is/Feo
- 93.0
- Comments
- for the 90-150µm fraction (McKay et al. 1974). Mineral and rock fragments are made of basalt, gabro, anorthosite and pyroxenes