© 2004 gggems.com All rights reserved.
MADAGASCAR GEM SAFARI 2
Sapphire from Maromby in a metamorphic limestone. ( Andranondambo area.)
Looking for sapphire on the ground in 1992.
Sapphires from Andranondambo, discovered in 1991. ( South-East of Madagascar )
In 1658, Flacourt, the governor of Fort-Dauphin mentions
sapphires in the south of Madagascar.
In 1808, Barthélemy Hugon writes that in the valley of
Ambolo there is a so beautiful stone and so rare that
lapidaries have not been able to recognize it and it was
above of all that is not diamond. ... In 1991, at the time of
the great dryness in the south, sapphire samples are found,
several centuries after their first discovery. The son of Mrs.
Dauphine, innkeeper in Tranomaro, main village of the
valley, was among the prospectors.
Actually, one of the most beautiful quality in the world is
just leaving ground.
The area of Tranomaro is characterized by an extreme
calcic and magnesian paragneiss abundance: gneiss with
diopside, plagioclasites, pyroxenites, wernerites,
wolastonite limestones, with varied leptynites, generally
with garnet, kinzigites, quarzites. One finds there rather
frequently syenitic gneisses or lamboanites. Gneisses
of injection are very frequent. The typomorphic minerals
are: basic diopside, scapolite, calcite, plagioclases,
wollastonite, garnet, cordierite and corundum.
East of Tranomaro, arteritic and eyesys injections assign
gneisses at leptynites. Cordierite gneiss bands are deeply
injected bed by bed, the injection has introduced magnetite
in abundance. Wollastonites form ptymatic lenses with
Marohotro, 18 km. south from Andanondambo. folds very tortured at the middle of the limestone. Note:
The sapphire on the left comes from Ambandanira, and aluminous anorthites or sakenites.
that on right-hand side from Maromby
(area of Andranondambo)
Sapphire from Behataza plateau (Andranondambo area)
Sapphires from Ilakaka. One of the various holes in sandstone forming
( South-West of Madagascar ) the deposit of Ilakaka discovered in to 1998.
Blue sapphires , pink and violet, Ilakaka area.
SANDSTONES OF ISALO.
The white sandstones of Isalo present imposing
stratifications intersected with gravel beds and
small conglomerates.
These soft sandstones resisted to erosion and taken a
ruiniform relief because the presence of braces siliceous
veins.
The mineral-bearing deposits include : a deposit of generally
classified gravels, the richest part and larger elements
being at the base of the bed - rock.
MORE ABOUT ILAKAKA
The far-south of Madagascar, semi-desert, does not present
Polychromatic sapphires from Iankaroka discovered in 1990.
any asphalt road yet, dust and trepidations are the daily
lot of any traveller. Sunsets and the natural life of its
inhabitants offer an appreciable compensation.
Rubies from Ianavoha. (South of Madagascar.)
Ruby from Andranomilitsy (Vohitany) Syenitic-nephelinic vein of rubies in Andranomilitsy.
--------------------------------------------------
In Soamiakatra, rubies were sold with sunglasses.
The Mayor of Soamiakatra in 1989, (East of Antsirabe.)
Rubies from Soamiakatra in the high plateaus.
Here, rubies are always found in alluvium.
MADAGASCAN CORUNDUMS
-----------------------------------------------
BLUE SAPPHIRE NATURAL COLOR
Sapphire from Analafady ( Ambondromifehy ) North.
The alluvial deposit of Ambondromifehy is exploited since
1996. It is located in a Jurassic limestone, but the origin of
sapphires is in alkaline basalts from the close volcanic zone.
Mahatsara ( Ambondromifehy)
GGGEMS.COM
© 1987 - 2004 gggems.com All rights reserved.
¦ PAKISTAN GEM SAFARI ¦ MADAGASCAR SAFARI 2 ¦ MORE ABOUT ILAKAKA ¦ »»
About the Author
http://www.gggems.com/Madagascar_gem_safari_en.htm |
|
 |
Home
Business Search
Business
Career
Internet-Marketing
Marketing
HOW DOES SPORTS COACHING DIFFER FROM CORPORATE COACHING?
Athletes Versus Employees Most athletes are young, open to improvement, eager to learn and anxious to receive what a coach can provide. For the athlete, there is a defined season and something tangible to compete for. Feedback is automatic,...
...Read More
The Spirit of Giving Teaching Tip
At this holiday time, take the opportunity to teach children about the spirit of giving. Giving takes many forms. You can give your time, such as volunteers do. You can make monetary, clothing or other donations to organizations in which you...
...Read More
State Academic Standards and Your Child- Did You Know?
Public education in the United States has never been equal for all students. It appears that those school districts located in wealthy communities have a bit more resources than those in poorer communities. Today more than ever, parents need to step...
...Read More
Juggling Career, Family, Consider Online Education
Finding the time to do it all - career, family, continue education? Having trouble jugging? Some problems in this area that people face are very similar to those of the beginning juggler. According to The Instant Jugglers' Manual, (c)1993 Infinite...
...Read More
Youth workers and educators offered free magazine
UK Youth, the UK's leading national youth work charity, is offering all professionals in the youth sector a special FREE EDITION of their quarterly publication UK Youth. "We are delighted to offer a free copy of UK Youth magazine to youth work...
...Read More
|
