Oldoinyo Lengai is located in Tanzania, Africa. Oldoinyo Lengai has earned the title as the weirdest volcano ever because it makes black lava. It Erupts a carbonated lava instead of a silicate one. Carbonates are a group of minerals that form 99% of the time in the ocean, making Oldoinyo Lengai a very rare volcano. The lava that erupts from Oldoinyo Lengai has almost no usual silicate materials found in ordinary lava, like olivine, pyroxene, and feldspar. An explanation for this would be that the carbonatite must be some form of melted limestone made as a body of magma that rises into a buried carbonate deposit. But it isn't limestone, since there have been high levels of concentration of rare Earth elements and constituents, like niobium, have no part in real limestone. But carbonatite somehow separates out of silicate lavas in a similar way. The current theory is that if it is under the right temperature, pressure, and chemistry, then carbonatite comes out of the silicate melt by differentiation, like cream from milk. These conditions will most likely occur where an old, thick continent is beginning to crack apart because of the rocks beneath the earth's crust or continent.
Elevation= 2,960 m (9,711 ft) Location
Geology Type= Strato volcano Last eruption 2010 (ongoing), Climbing= Easiest route, Scramble

Oldoinyo Lengai's Effect on Tanzania
Tanzania grows cron, millet, sorghum, pulses, and rice. So when Oldoinyo Lengai erupted (or erupts) these crops would be covered in ash. Herders also live in Tanzania, so when Oldoinyo Lengai erupts they are forced to evacuate with their cattle. Houses were also destroyed by the eruptions.

Facts about Tanzania
Tanzania's cash crops are coffee, cashews, cotton, sugar, sisal, cloves, pyrethrum, and tobacco.
2. There are 18,553,715 males and 18,931,679 females
3. Christian 30%, Muslim 35%, indigenous beliefs 35% (religions)
4. In Tanzania, people 15 and over can read and write in Swahili (Kiswahili) English, or Arabic.
5. Languages: Swahili or Kiswahili, Kiunguju (Swahili in Zanzibar) English, and Arabic.