Mineral collecting is like a modern-day treasure hunt!
 
Ruri, a high school girl who loves jewelry and accessories, gets into the world of mineral collecting, venturing into mountains, rivers, and caves. The first volume features numerous minerals, including quartz, garnet, pyrite, gold sand, and fluorite. The manga is full of fascinating scenes focusing on specialized tools such as a panning dish, hammer, and topographical maps. An authentic scientific adventure based on the author's solid knowledge of mineralogy!
 
(Source: Harta, translated)

Mineral collecting is like a modern-day treasure hunt!
 
Ruri, a high school girl who loves jewelry and accessories, gets into the world of mineral collecting, venturing into mountains, rivers, and caves.
The first volume features numerous minerals, including quartz, garnet, pyrite, gold sand, and fluorite.
The manga is full of fascinating scenes focusing on specialized tools such as a panning dish, hammer, and topographical maps.
An authentic scientific adventure based on the author's solid knowledge of mineralogy!
 
(Source: Harta, translated)

Due to decreases in their memberships, the Physics, Chemistry, Biology, and Geology clubs are merged to form the "Grand Sciences Club." The club members, who have different interests and specialties, begin their days full of questions and exploration!
 
Q. How to best pull off the "blackboard eraser drop" prank? 
Q. "Nitrate" can be used as an explosive. Is it true that it can be made from something close at hand? 
Q. What shape of paper airplane will fly the farthest?
 
A scientific comedy full of interesting trivia, authored by a licensed science teacher! 
 
(Source: Kadokawa, translated)
 
Note: Originally serialized in Monthly Action magazine and published by Futabasha, it was re-issued by Kadokawa under the Harta Comix label in 2022.

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