Planetary Simulant Database
Free Resource for Regolith Simulant Information
Mineralogy
| Component | Abundance (%) |
|---|---|
| Gabbro | 100 |
Bulk Chemistry
| Element | Wt.% |
|---|---|
| Si | 44.39 |
| Ti | 0.70 |
| Al | 18.05 |
| Fe2+ | 3.52 |
| Fe3+ | 9.04 |
| Mg | 2.97 |
| Ca | 15.25 |
| Na | 4.13 |
| K | 1.52 |
| Mn | 0.24 |
| P | 0.13 |
| S | 0.01 |
| Total | 100.00 |
Physical Properties
| Property | Value |
|---|---|
| Mean grain size | 85 μm |
Kohyama Simulant
Simulant Name: Kohyama Simulant
Availability: May Be Available
Fidelity: Standard
Developed By: Shimizu Corporation
Available From: N/A
Publications: Sueyoshi, K. et al. (2008), Reaction Mechanism of Various Types of Lunar Soil Simulants by Hydrogen Reduction. 11th Biennial ASCE Aerospace Division International Conference on Engineering, Science, Construction, and Operations in Challenging Environments.
Similar to the Oshima Simulant, Kohyama is also referred to as “Kohyama Base Simulant”, but this likely refers to the fact that it is “based” on the Kohyama gabbro. The simulant was developed by the Shimizu Corporation, along with Oshima and the FJS- series. Kohyama appears to be made entirely of gabbro, and is intermediate between highlands and mare in composition.
If the production methods for Kohyama were the same as the FJS- series, then the raw materials were progressively crushed finer until the desired particle size distribution was obtained. The amount of Kohyama produced, and its fate, are unclear.
