The most common and most likely answer to this crossword clue is the 9 letter word MAUSOLEUM
I've seen this crossword clue in The Times
M
A
U
S
O
L
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M
More clues leading to the result MAUSOLEUM
- Gold only found in quiet tomb
- Usual memo recirculated was a great wonder
- Large tomb, parent bagging a posh one
- Tomb of old woman, lined with gold only
- Mum went around clinging to gold, alone in a burial chamber
- Gold one found inside quiet tomb
- Mummy with inscribed gold fish in burial chamber
- Gold alone is kept in silence in gloomy place
- Gold only to be used in mother’s tomb
- Gold single mother keeps in vault
Buddy explains!

The straight part
We know that "tomb" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case tomb = mausoleum.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does MAUSOLEUM mean?
MAUSOLEUM noun- A large stately tomb or a building housing such a tomb or several tombs.
- (by extension) A gloomy, usually large room or building.