Skip to main content

Madini mapya yagunduliwa Mererani, Tanzani

'Masharubu' ya madini ya Merelaniite

Madini mapya yamegunduliwa nchini Tanzania, katika eneo lenye madini ya kipekee la Manyara, na kupewa jina Merelaniite.

Jina hilo limetokana na eneo ambalo madini hayo yalipatikana, Merelani (Mererani) katika milima ya Lelatema katika wilaya ya Simanjiro katika eneo la Manyara.

Eneo hilo linafahamika sana kwa madini ya Tanzanite.

Madini hayo yaligunduliwa na wataalamu kutoka Chuo Kikuu cha Kiteknolojia cha Michigan cha Marekani, makavazi ya historia asilia ya London, chuo kikuu cha Di Firenze cha Italia na makavazi ya historia asilia ya Smithsonian ya Washington.

Wataalamu sita waliofanya uchunguzi, kwenye makala iliyochapishwa kwenye jarida la Minerals (Madini) wanasema madini hayo yana vipande vinavyofanana na sharubu vya rangi ya kijivu vya urefu wa milimita moja hivi, ingawa kuna baadhi vyenye urefu wa hadi mililita 12.

Kipenyo cha vipande hivyo ni mikrometa kadha.

Madini hayo yanakaribiana na madini ya zoisite (aina ya tanzanite), prehnite, stilbite, chabazite, tremolite, diopside, quartz, calcite, graphite, alabandite na wurtzite.

"Madini haya mapya yametambuliwa na taasisi inayoyapa majina madini, IMA CNMNC (2016-042), na kupewa jina linalotokana na eneo yalipogunduliwa kwa heshima ya wachimba migodi wa eneo hilo wa zamani, wanaoishi na wanaofanya kazi," makala ya wataalamu hayo inasema.

"Wilaya ya Merelani imekuwa maarufu tangu mwishoni mwa miaka ya 1960 kutokana na aina ya madini ya thamani ya rangi ya samawati kwa jina zoisite yafahamikayo kama tanzanite, lakini ni eneo muhimu sana kwa wanaotafuta madini ya kipekee na ni eneo la kusisimua sana kutafuta madini mapya," John Jaszczak, mwanafizikia katika Chuo Kikuu cha Kiteknolojia cha Michigan, na aliyeongoza katika kuandika makala kuhusu ugunduzi wa madini hayo anasema.

Madini hayo yalitambuliwa mara ya kwanza mwaka 2012 na Simon Harrison na Michael Wise, bila wataalamu hao kuyafahamu vyema, pale walipogundua vitu vilivyoonekana kama nyaya ndogo zilizokuwa zimedunga na kuingia ndani ya vipande vya madini ya chabazite.

Baadaye uchunguzi zaidi ulifanywa na ikagunduliwa kwamba yalikuwa madini tofauti

 

Comments

Popular posts from this blog

Mexico elects Claudia Sheinbaum as first woman president

Claudia Sheinbaum has been elected as Mexico's first woman president in an historic landslide win. Mexico's official electoral authority said preliminary results showed the 61-year-old former mayor of Mexico City winning between 58% and 60% of the vote in Sunday's election. That gives her a lead of almost 30 percentage points over her main rival, businesswoman Xóchitl Gálvez. Ms Sheinbaum will replace her mentor, outgoing President Andrés Manuel López Obrador, on 1 October. Ms Sheinbaum, a former energy scientist, has promised continuity, saying that she will continue to build on the "advances" made by Mr López Obrador. In her victory speech, she told voters: "I won't fail you." Her supporters are celebrating at the Zócalo, Mexico City's main square, waving banners reading "Claudia Sheinbaum, president". Prior to running for president, Ms Sheinbaum was mayor of Mexico City, one of the most influential political positions in the country ...

How AI turned a Ukrainian YouTuber into a Russian

How AI turned a Ukrainian YouTuber into a Russian “I don't want anyone to think that I ever said these horrible things in my life. Using a Ukrainian girl for a face promoting Russia. It's crazy.” Olga Loiek has seen her face appear in various videos on Chinese social media - a result of easy-to-use generative AI tools available online. “I could see my face and hear my voice. But it was all very creepy, because I saw myself saying things that I never said,” the 21-year-old, who studies at the University of Pennsylvania, told the BBC. The accounts featuring her likeness had dozens of different names like Sofia, Natasha, April, and Stacy. These “girls” were speaking in Mandarin - a language Olga had never learned. They were apparently from Russia, and talked about China-Russia friendship or advertised Russian products. “I saw like 90% of the videos were talking about China and Russia, China-Russia friendship, that we have to be strong allies, as well as advertisements for food.” O...

What to expect from the 2024 Democratic National Convention

With just three months to go before the 2024 election, thousands are set to gather in Chicago this week for the Democratic National Convention. It’s a tradition dating back to the 1830s, when a group of Democratic delegates supporting President Andrew Jackson gathered in Baltimore to nominate him for a second term. This year will look slightly different from others, as the Democratic Party has already officially nominated Vice-President Kamala Harris in a virtual roll call after President Joe Biden dropped out of the race. But many of the other DNC traditions - including appearances from celebrities and memorable speeches from party leaders - will remain the same. Here’s what to know. What happens at the DNC? Because Ms Harris and Mr Walz have already been nominated, this year’s convention will focus on speeches from prominent Democrats and the adoption of the party’s platform. Delegates work during the day to finalise the platform, a draft of which has already been released. It focuse...