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mitkal

1

In Saudi Arabia, 20ᵗʰ century, a unit of mass = 1½ dirhems, about 4.68 grams.

2

In Africa, 13ᵗʰ – 20ᵗʰ centuries, the principal unit of mass in the trade in gold dust between West and North Africa, = 1/6th of the North African trade ounce, about 4.5 grams. The trade ounce was descended from the Roman ounce, which had been similarly divided into 6 sextarii.

According to Garrard (1980, page 225), the eastern part of the Akan area, in what is now Ghana, tended to use a weight series based on this mitkal, while to the west, in present-day Ivory Coast, a series based on the trade ounce was more common. He explains the difference by the difference in predominant trade items: Ghana produced more gold dust, while the future Ivoriens traded ivory and other more massive items.

3

In North Africa and the Sahel, for coined gold the mitkal (or dinar) was reckoned at 6 2/3 mitkals to the ounce, so the mitkal was about 4.05 grams.

In Mande, a language often used in trade, the word was metikale.

4

In Sudan , a unit of mass = 40 habba. One mitgal = 1½ dirhem, about 4.68 grams (72.22 grains).

Amery contradicts himself on this subject. On page 427 he states the mitgal equals 40 habba of gold, and the kirat 10 habba (i.e., 1 mitgal = 4 kirats), while on page 430 he says the mitgal equals 24 kirat. (The kirat is usually 1/24ᵗʰ of some larger unit.)

H[arald] F[rançois] S[aphir] Amery.
English-Arabic Vocabulary for the Use of Officials of the Anglo-Egyptian Sudan, compiled in the Intelligence Department of the Egyptian Army.
Cairo: Al-Mokattam Printing Office, 1905.

sources

The dînârs of Heraclius used to be current among the people of Moakkah before Moslem times, and also the baghliyah¹ dirhams of Persia; but it was not customary to buy and sell with them except by considering the coins as bullion.² The mithḳâl with them was a recognized weight, equal to twenty-two carats less a fraction. Ten dirhams weighed seven mithḳâls. The ruṭl was twelve ounces, and every ounce was forty dirhams. The Apostle of Allah confirmed this, and so did abu-Bakr, 'Umar, 'Uthmân, and 'Ali. When Mu'âwiyah became ruler, he confirmed this likewise.

Francis Clark Murgotten.
The Origins of the Islamic State. Being a Translation from the Arabic accompanied with annotations geographic and historic notes of the
Kitâb Futûḥ Al-Buldân of
al-Imâm abu-l Abbâs Aḥmad ibn-Jâbir al-Balâdhuri.
Part II.
New York: Columbia University, 1924.
Page 263.