Packet 8: Bonus 6
Clay minerals like illite and kaolinite are produced from the chemical weathering of this type of mineral. For 10 points each:
[10h] Name this general class of minerals whose compositions change from being "calcium-rich" to "sodium-rich" when moving down the continuous branch of Bowen's Reaction Series.
ANSWER: feldspars [accept plagioclase feldspar]
[10m] Orthoclase feldspar is given a value of 6 in this relative system of measurement, which gauges the ability of a mineral to resist scratches from other minerals.
ANSWER: Mohs hardness scale
[10e] All feldspars contain silicon, oxygen, and this metallic element. This third most abundant element in the Earth’s crust is symbolized Al (“A-L”).
ANSWER: aluminum [or aluminium]
<Earth Science — Kevin Qiu> | SHOW-ME Four Packet 8
| Heard | PPB | E % | M % | H % |
|---|---|---|---|---|
| 25 | 19.20 | 100% | 72% | 20% |
Conversion
Summary
| Tournament | Edition | Match | Heard | PPB | E % | M % | H % |
|---|---|---|---|---|---|---|---|
| Rube Goldberg XIX | 11/20/2025 | ✓ | 15 | 17.33 | 100% | 67% | 7% |
| SHOW-ME Four Nationwide HS | 11/20/2025 | ✓ | 5 | 28.00 | 100% | 100% | 80% |
| SPOOKY IX | 11/20/2025 | ✓ | 5 | 16.00 | 100% | 60% | 0% |