QUARTZ WITH GOETHITE INCLUSIONS

From fanned white, yellow to brown coloured dendritic forms to golden 'organ-pipes', Goethite, an iron-bearing hydroxide mineral, is one of the more common inclusion varieties found in quartz, but its varied colours and almost infinate forms and patterns make it a popular one among collectors.
Goethite is sometimes called 'Cacoxenite' by the trade when it appears as golden coloured crystal inclusions, but cacoxenite is a separate mineral with no relation to goethite and is yet to be discovered as an inclusion in quartz.