そんな鉱物ですが、世界では約5,478種類の鉱物が知られており、実は毎年新しい鉱物が発見されていたりします。

日本でもこれまでに132種の鉱物が世界で初めて発見されているのですが、昨年も熊本県美里町の山中から新鉱物「不知火鉱（しらぬいこう、学名：Shiranuiite）」を発見されおり、（日本で唯一のプラチナ系砂白金の鉱床で、不知火鉱は同地の砂白金から見出されました。）不知火鉱は熊本県の古称「火の国」の伝承にちなんで命名されております。いつも思うのですが落ち着いてそれでいて分かりやすくて覚えやすくてネーミングセンスが絶妙だなといつも思います。

 

今回の万博においても（こちらは地球の鉱物ではないですが）「世界最大級の火星の石」が展示されているのですが、かつての「月の石」においても多くの人が石を観に長蛇の列をなして並んだことを思い返しても、石が人を魅了するのか、人が石を観てみたくなるのか…。

また、ジュエリーになったり、珍しい形状の鉱物でない限りみるからになんてことない石だとしても、その石の分析や科学的根拠などなど「生い立ち」を知れば知るほどこれまた不思議、「ただの石」ではなくなってきます。人を惹きつける石の存在とは…

 

そんな惹きつける惹きつけられる理由は人それぞれ？石それぞれ？だとは思いますが、自分の場合、自分たちをよりも地球のことよく知ってるんじゃないかという気にさせるところなのか、とはいいつつも物は言わない。

 

鉱物は形成されるまでに数千万年〜数億年という膨大な時間をかかり、また、その形成途中においても地球46億年の歴史の中で地中の圧力やマグマの熱により破壊と再生を繰り返しているわけでして、そんな鉱物たちがわずか100年足らずの私たちの短い人生と交差する瞬間は一瞬だと思うと実に奇跡的な確率。

 

長い年月をくぐり抜けてきた物言わぬ地球の大先輩と、一瞬だけ時を同じくした自分が交信してみたいと思うのですが、こうなったらどうしても万博の火星の石が観たくなってきます…。

 

それではごきげんよう。（スタッフY）

 

 

Actually, I haven’t been able to visit the Osaka-Kansai Expo yet, but I’m starting to panic because I need to make plans soon. One thing I’d like to see if I get the chance is the “Mars Stone” meteorite. It is believed to have flown from Mars to Earth tens of thousands of years ago, and it is one of the largest meteorites of Martian origin in the world. Since there are very few people who have had the opportunity to encounter extraterrestrial matter, I would like to take this chance to see it for myself.

 

For some reason, I’ve always been fascinated by stones and minerals, and recently I came across news about the discovery of a new mineral.

A new black-green mineral was discovered within jade extracted in Okayama Prefecture, and it was named “Amaterasu Stone” after the Japanese mythological deity Amaterasu. It reportedly differs significantly from known minerals in terms of chemical composition and crystal structure, and has been officially recognized as a new mineral by the International Mineralogical Association.

 

This new mineral was discovered in jade, but it seems that new minerals have been discovered in jade before, and until now, they were thought to be unique to the jade from the Itoigawa region of Niigata Prefecture, which is famous for its jade hunters. However, the “Amaterasu Stone” discovered this time was found in Okayama Prefecture, and it has been confirmed that similar minerals are also produced in the jade from the Oosayama region of Okayama Prefecture. Additionally, it has been revealed that the jade from the Oosayama region contains multiple unknown minerals, one of which is Amaterasu Stone.

 

According to the research team, “Minerals are products of geological processes. Therefore, the discovery of new minerals also indicates the existence of unknown geological environments or processes. Previously, it was known that jade forms in subduction zones (where two plates collide and one plate slides beneath the other; The Japanese archipelago’s deep interior falls under this category. However, the discovery of new minerals like Amaterasu Stone from such zones provides a new perspective for understanding the origin and evolution of jade.” For the average person, this is just a hunch that new minerals might be discovered.

 

Such minerals are known worldwide, with approximately 5,478 types identified, and new minerals are actually discovered every year.

In Japan, 132 mineral species have been discovered for the first time in the world, and last year, a new mineral called “Shiranuiite” was discovered in the mountains of Misato Town, Kumamoto Prefecture. (This is the only platinum-group sand platinum deposit in Japan, and Shiranuiite was discovered from the sand platinum in the same area.) Shiranuiite was named after the traditional name of Kumamoto Prefecture, “The Land of Fire.” I always think that the naming is calm yet easy to understand and remember, with an exquisite sense of naming.

 

At this World Expo, although it is not an Earth mineral, the “world’s largest Martian rock” is on display. Recalling how many people formed long lines to see the “moon rock” in the past, one wonders whether stones captivate people or whether people are simply drawn to see stones…

Even if a stone is just an ordinary rock that doesn’t look particularly interesting unless it’s turned into jewelry or has a rare shape, the more you learn about its analysis, scientific basis, and “origin,” the more mysterious it becomes—it’s no longer just a “stone.” What is the essence of a stone?

 

The reasons for being drawn to or repelled by stones vary from person to person, and perhaps from stone to stone. In my case, it makes me feel like stones know more about the Earth than we do.

 

Even if a stone is nothing special—unless it’s turned into jewelry or has an unusual shape—the more you learn about its analysis, scientific basis, and “origin,” the more mysterious it becomes, and it ceases to be “just a stone.” What is the essence of a stone?

 

The reasons for being drawn to or repelled by stones vary from person to person, and perhaps from stone to stone. In my case, it makes me feel that stones know more about Earth than we do.

 

Mineral formation takes tens of millions to hundreds of millions of years, and even during their formation, they undergo repeated cycles of destruction and regeneration due to underground pressure and magma heat over Earth’s 4.6 billion-year history. The moment when such minerals intersect with our brief human lives of less than 100 years is but an instant.

 

It’s truly a miraculous probability, so I’m eager to see the Mars rocks at the Expo, hoping to communicate with these silent, ancient Earth elders for just a moment.

 

Take care. (Staff Y)

 

 

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