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Questions related from Nima Nezafati
I observed this radial structure in weathered basic volcanic rocks located in an arid region. The scale of the image spans approximately 20 meters. I am curious about the origin of this radial...
27 January 2025 1,984 6 View
Recently, as I was studying some magnetite ores under polarizing microscope, I have observed some magnetite stars (I call them magnetite snowflakes!). Please see the attached picture. I wonder if...
24 August 2023 3,995 6 View
I have recently visited a mineral occurrence with the following general characteristics: Pervasive argillic alteration in a subvolcanic intermediate rock, sulfide veinlets (partly oxidized),...
02 December 2016 3,848 40 View
Under what conditions can iron-oxide laths (in some cases as box-work texture) form in bornite? Please see the attached picture.
26 September 2014 3,485 26 View
The manto-type copper deposits (e.g. Sato 1984, Kojima et al. 2003), the basalt-andesite copper deposits (including Michigan type and the andesite copper deposits, e.g. Guilbert and Park, 1986,...
20 August 2014 5,211 4 View
During my microscopic studies, I have observed numerous skeletal form magnetite grains in andesite porphyry rocks. I wonder under what conditions they have formed. I already know that such...
19 August 2014 8,684 19 View
Sometimes the sum of the major and trace elements of some samples exceeds 100%. I would like to know why this happens.
24 February 2014 7,036 5 View
