Astrology is a science that studies the movement of celestial objects and their impact on human lives. One of the most important planets in astrology is Mercury, which is known for its communication, intellect, education and analytical abilities. Mercury placed in the 12th house for Lagna Virgo can make some interesting predictions.
The 12th house is traditionally associated with losses, expenses, sacrifices, liberation, spiritual awakening and secret activities. It is a house of confinement and isolation from the world. For Lagna Virgo natives, Mercury becomes the lord of houses [1 and 10], which are related to self, personality, success, career and professional life. Therefore having Mercury in the 12th house brings mixed results for these natives.
Since it's an enemy sign placement for Mercury (as it rules Gemini), this placement may create hurdles in one's communication skills such as speaking or writing articulately. This could lead to misunderstanding between friends or colleagues at work or even misinterpretation from senior professionals.
However, the intelligence quotient of native is still high due to presence in sign aspect with own Lagna indicating that the individual will find inherent ability to solve problems. With Lagna being owned by Mars we can say that there could be an increased clarity to communicate through writing and present complex issues arising out of technical areas also learning foreign languages become easier.
Mercury being Karaka(Indicator) planet for fourth house indicates good education prospects but due to 12th House aspect on fourth one can go overseas(for higher education)or doing independent research work in universities/research organisations either private/governmental units. Despite opposition from family members concerning stability with finances this individual would have unexpected support allowing them flexibility financially; may it be savings or legacy etc.
As mentioned before being located/at aspect with Own sign(Lagna) means any obstacle people face while out (disaligned approach towards themselves)indicates a proclivity towards spirituality as the efforts to introspect will allow them to realize their potential.
One disadvantage of having Mercury in the 12th house is that it can bring hidden enemies or losses through secret activities like theft or frauds by someone whom you trust. There is a risk of getting trapped by people with malicious intent. One should take precautions and avoid risky behavior.
The aspect of Mercury on 6th House may facilitate doing profiling for larger group with respect to disease/health related work.
In conclusion, Mercury placed in 12th House for Lagna Virgo can have both positive and negative effects on an individual's life. It might hamper communication skills but one may be more intuitive when given with situations where verbal skills are required.With support from Mars i.e., Strong motivation towards attaining knowledge serves well for higher education prospects provided any disturbance is eliminated due to Mercury coming under the influence of an enemy sign otherwise positivity comes though spirituality and introspection which balances this placement overall.