Did you think was any connection to the Boswellia sacra, in other ways here i found a interesting history of use of the frankincense



Spoiler Alert, click show to read: 
The lost city of Ubar, sometimes identified with Irem in what is now the town of Shisr in Oman, is believed to have been a centre of the frankincense trade along the recently rediscovered "Incense Road". Ubar was rediscovered in the early 1990s and is now under archaeological excavation.