Apjohnite ( IMA symbol: Apj) is a

manganese Manganese is a chemical element with the symbol Mn and atomic number 25. It is a hard, brittle, silvery metal, often found in minerals in combination with iron. Manganese is a transition metal with a multifaceted array of industrial alloy use ...

aluminium Aluminium (aluminum in American and Canadian English) is a chemical element with the symbol Al and atomic number 13. Aluminium has a density lower than those of other common metals, at approximately one third that of steel. I ...

sulfate mineral The sulfate minerals are a class of minerals that include the sulfate ion () within their structure. The sulfate minerals occur commonly in primary evaporite depositional environments, as gangue minerals in hydrothermal veins and as secondary mine ...

with the chemical formula MnAl(SO)·22HO. It was named after

Trinity College Dublin , name_Latin = Collegium Sanctae et Individuae Trinitatis Reginae Elizabethae juxta Dublin , motto = ''Perpetuis futuris temporibus duraturam'' (Latin) , motto_lang = la , motto_English = It will last i ...

professor James Apjohn. Its type locality is

Maputo Province Maputo Province is a province of Mozambique; the province excludes the city of Maputo (which comprises a separate province). The province has an area of and a population of 1,968,906 (2017 census). Its capital is the city of Matola. Geography ...

Mozambique Mozambique (), officially the Republic of Mozambique ( pt, Moçambique or , ; ny, Mozambiki; sw, Msumbiji; ts, Muzambhiki), is a country located in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi ...

.Apjohnite
on mindat.org

References

External links

Apjohnite data sheet on Webmineral

Apjohnite
on the ''Handbook of Mineralogy'' {{mineral-stub Manganese(II) minerals Aluminium minerals Sulfate minerals