Matter
- Name
- lunar soil sample 78220
- Family
- solid
- Comments
- in addition to the minerals, in the 90-150 microns fraction there are also: agglutinates: 57%, Basalt:1%, breccia: 13.3%, anorthosite: 1.3%, gabbro:0.3% + glass: 7%
- Database
- Level
- from sample return mission
- Origins
- planetary
- Provider
- Apollo Sample Curator - Mail code KT - NASA Johnson Space Center - 2101 NASA Parkway - Houston, Texas 77058-3696 USA
- Provider reference code
- 78220
- Terrain type
- mineral surface
- Place
- collected at Station 8, at base of Sculptured Hills, south of Wessex Cleft. 78220 (from which 78221 was subsampled) was collected from the regolith surface under a 2-3 m diameter norite boulder rolled over by the crew
- Preparation
- raw
- Method
- sampled from upper few centimeters beneath norite boulder
- Phase type
- solid
- Component type (group)
- superficial deposit
- Comments
- is a mixture of highlands and valley-floor debris - sedimentary unconsolidated sample
- Shape
- granular
- Texture
- loose granular
- Type of porosity
- porous
- Grain sizes
-
Grains Size min Size max Size median Size width Size mass fraction Grain shape #1 1.0 ${\mu}m$ 16000.0 ${\mu}m$ 1.0 irregular - Comments
- the average grain size is 43 microns (Morris 1978, Graf 1993)
- Oxides
-
Formula $SiO_{2}$ $TiO_{2}$ $Al_{2}O_{3}$ $FeO$ $MnO$ $MgO$ $CaO$ $Na_{2}O$ $K_{2}O$ $P_{2}O_{5}$ $S$ Mass fraction (%) 43.67 3.84 17.13 11.68 0.157 10.55 11.79 0.37 0.092 0.08 0.088 - Oxides comments
- data from Duncan et al. (1974)
- Documentations
- Links
- Publications